Unit 4 : SCHOOL EDUCATION SYSTEM - Hỏi đáp

1. 'David is in prison for smoking drugs.' He .... that is was against the law

A . is telling C . told

B. was told D. tells

2. ' the maintenance people didn't remove the chairs from the ballroom'. 'don't worry. they... them before the dance begins'

A . will have been moved C . were moved

B . will have moved D . moved

2. ' the maintenace people didn't remove the chairs from the ballroom' . 'don't worry . they... them before the dance begins'

A . will have been moved C . were moved

B . will have moved D . moved

I. turn into passive voice

1. my father waters this flower every morning

This flower is watered (by my father) every morning.

2. John invited Fiona to his birthday party last night

2.Fiona was invented to John’s birthday party last month.

3. Her mother is preparing the dinner in the kitchen

The dinner is being prepared (by her mother) in the kitchen.

4. We should clean our teeth twice a day

Our teeth should be cleaned twice a day.

5. our teachers have explained the English grammar

The English grammar has been explained (by our teacher).

6. some drunk drivers caused the accident in this city

.The accident was caused in this city (by some drunk drivers).

7. Tom will visit his parents next month

7.Tom’s parents will be visited (by him) next month.

8. The manager didn't phone the secretary this morning

The secretary wasn’t phoned (by the manager) this morning.

9. Did Mary this beautiful dress?

Was this beautiful dress bought by Mary?

10. I won't hang these old pictures in the living room

10.These old pictures won’t be hung in the living room(by me).

11. The German didn't build this factory during the second world war

This factory wasn’t built (by the Greens) during the Second World War.

12. The German are going to paint this house and these cars for Christmas Day

This house and these cars are going to be painted for Christmas day by the Greens.

13. Ann had fed the cats before she went to the cinema

The cats had been fed (by Ann) before she went to the cinema.

14. The students have discussed the pollution problems since last night

.The pollution problems have been discussed (by the students) since last week.

15. Have the thieves stolen the mos valuable painting in the national museum?

Has the most valuable painting in the national museum been stolen (by the thieves).

16. Some people will interview the new president on TV

.The new president will be interviewed on TV (by some people).

17. How many languages do they speak in canada?

How many languages are spoken in Canada(by them)?

18. Are you going to repair those shoes?

Are those shoes going to be repaired ?

19. He has broken his nose in a fotball match

.His nose has been broken in a football match(by him).

20. Have you finished the above sentences?

Have above sentences been finished ?

21. the waiter brings me this dish

This dish is brought to me (by the waiter).

22. our friends send these postcards to us

These postcards are sent to us(by our friend).

23. Their grandmother told them this story when they visted her last week

This story was told to them(by their grandmother) when they visited her last week.

24. Tim ordered this train ticket for his mother

This train ticket was ordered for Tim’s mother.

25. You didn't show me the special cameras

THE special cameras weren’t showed to me.

26. She showed her ticket to the airline agent

Her ticket was showed to the airline agent(by her).

27. He lends his friend his new shoes

His new shoes are lent to his friends(by him).

28. she left her relatives five million pounds

Five million pounds was left to her relatives (by her).

29. The shop assiastant handed these boxes to the customer

These boxes were handed to the customer (by the shop assistant).

30. the board awarded the first prize to the reporter

The first prize was awarded to the reporter (by the board).

31. Have you sent the christmas cards to your family ?

Have the Christmas cards been sent to your family?

32. the committee appointed Alice secretary for the meeting

Alice was appointed secretary for the meeting(by the committee).

33. He hides the broken cup in the drawer

The broken cup is hidden in the drawer (by him).

34. They keep this room tidy all the time

This room is kept tidy (by them) all the time.

35. They all voted the party a great success

The party was voted a great success(by them).

36. We gave Ann some bananas and some flowers

Ann was given some bananas and some flowers(by us).

37. They moved the fridge into the living room

.The fridge was moved into the living room(by them).

38. She bought some cups of tea to the visitors in the next room

Some cups of tea were brought to the visitors in the next room (by her).

39. they find the new project worthless

.The new project is found worthless.

40. the secretary didn't take the note to the manager

.The note wasn’t taken to the manager(by the secretary).

II. chuyen cac cau sau sang bi dong

1. They told me that you were the best architect in this city

.I was told that you were the BEST architect in this city.

2. she reported that the flowers were killed by fost

.It was reported that the flowers were killed by frost.

3. some people inform me that the director is going to take a business trip to England

.I am informed that the director is going to take a business trip to England.

4. That officer announced that the meeting was delayed until next week

.It was announced that the meeting was delayed until next week.

5. He discovered that this cotton was grown in Egypt

.It was discovered that this cotton was grown in Egypt.

6. They promise that the performance will start on time

It is promised that the performance will start on time.

7. He recommends that we should stay at the city center

It is recommended that we should stay at the city center.

8. We believed that Alice ould pass the driving test

.It was believed that Alice would pass the driving test.

9. The director notifies all the workers that they will have to work extra hard this month

All the workers are notified that they will have to work extra hard this month.

10. They have persuaded me that they will go with me to the stadium

.I have been persuaded that they will go with me to the stadium.

11. they have decided that the company will go to the beach together at the weekend

.It has been decided that the company will go to the beach together at the weekend.

12. people think that maradona is the best football player in the 20th century

It is thought that Maradona is the best football player in the 20th century

13. They find that the job is not suitable for a girl like her

.It is found that the job is not suitable for a girl like her

14. the teacher explainted that this powerful engine pulled the train

It was explained that this powerful engine pulled the train.

15. he told me that his football team had played well last season

I was told that his football team had played well last season.

16. I had my nephew paint the gate last week

I had the gate painted last week.

17. She will have Peter wash her car tomorrow

.She will have her car washed tomorrow.

18. John gets his sister to clean his shirt

John gets his shirt cleaned.

19. Anne had had a friend type her composition

.Anne haD had her composition typed.

20. Rick will have a barber cut his hair

Rick will have his hair cut.

21. I will get the dressmaker to make a new dress

.I will get a new dress made.

22. He had a mechanic repair his car

He had his car repaired.

23. She often gets the technician to maintain the heater

.She often gets the heater maintained.

24. they had the police arrest the shoplifter

They had the shoplifter arrested.

25. Are you going to have the shoemaker repair your shoes ?

Are you going to have your shoes repaired?

26. I must have the dentist check my teeth

.I must have my teeth checked.

27. She will have a veterinary surgeon examine her dog

.She will have her dog examined.

28. We had a man take his photograph when we were on holiday last summer

We had this photograph taken when we were on holiday last summer.

29. the greens had a carpet clean their carpet

The Greens had their carpet cleaned.

30. they have her tell the story again

They have the story told again.

1. The test hasn't been finished in time yet

2. My homework is being done at the moment

3. Không có tân ngữ ở câu chủ động để chuyển thành chủ ngữ câu bị động.

4. The contest is going to be celebrated by the students next month

5. Their school will be completed by our children year soon

6. Our meals are prepared everyday

7. When he came, the dishes was being washed

8. Their house can't be cleared up because of the bad weather

9. The trees were grown here in 1998

10. A new car has been bought by my mother for 5 months

She wants the hair dresser to do her hair now. ➝ She wants to ... do her hair now

It must have been those boys who damaged my bike. ➝ My bike ...must has been damaged by those boys

You should not buy anything from this shop. ➝ Nothing ...should be bought from this shop by you

The number of people affected by the devastating earthquake ..................................... with certainty.

A. Have not yet determined

B. Has not yet determined

C. Have not yet been determined

D. Has not yet been determined

1. Neil Armstrong was the first man who walked on the moon
=> Neil Armstrong was the first man to walk on the moon
2. I come from a city that is located in the southern part of the country .
=> I come from a city located in the southern part of the country .
3. The children who attend that school receive a good education .
=> The children attending that school receive a good education .
4. The scientists who are researching the causes of cancer are making progress .
=> The scientists researching the causes of cancer are making progress .
5. They live in a house that was built in 1980 .
=> They live in a house built in 1980 .
6. We have an apartment which overlooks the park .
=> We have an apartment overlooking the park .
7. Yuri Gagarin became the first man who flied in to space .
=> Yuri Gagarin became the first man to fly in to space .
8. We stood on the bridge which connects the two halves of the building .
=> We stood on the bridge connecting the two halves of the building .
9. I come from a city which is located in the southern part of the country.
=> I come from a city located in the southern part of the country.
10. The vegetables which are sold in this supermarket are grown without chemicals.
=> The vegetables sold in this supermarket are grown without chemicals.
11. Do you know the woman who is coming toward us ?
=> Do you know the woman coming toward us ?
12. The people who was waiting for the bus in the rain are getting wet .
=> The people waiting for the bus in the rain are getting wet .
13. I come from a city that is located in the southern part of the country .
=> I come from a city located in the southern part of the country .
14. They live in a house that was built in 1890.
=> They live in a house built in 1890.
15. He was the first man who left the burning building .
=> He was the first man to leave the burning building .
16. The couple who live in the house next door are both college professors
=> The couple living in the house next door are both college professors
17. The people who are waiting for the bus in the rain are getting wet .
=> The people waiting for the bus in the rain are getting wet .
18. The students who did not come to the class yesterday explain their absence to the teacher .
=> The students not coming to the class yesterday explain their absence to the teacher .
19. Did you get the message which concerned the special meeting ?
=> Did you get the message concerning the special meeting ?
20. Lan is the second student who entered the classroom this morning .
=> Lan is the second student to enter the classroom this morning .

rẻ

1. Can they control the city traffic?

-> can the city traffic..be controlled ?.........

2. we couldn't drive fast because the traffic was haavy

-> since ....the traffic was heavy , we couldn't drive .......

3. I'm really sorry I didn't invite her to the party

-> I really wish ..i had invited her to the party .......

4. the town was nearer than we thought

=> the town wasn't as far as we thought ........

5. they won't be able to come on sunday

-> It will be ....unable to come on sunday ....

6. we spent five hours getting to london

-> It ..took us five hours to get to london....

7. my brother can't run as fast as he used to

-> my brother used to ...run faster than he does now .....

8. I don't come by car because I can't park near my office

-> If ....I can park my car near office , I will come by car........

9. Jane can't cook very well

-> Jane isn't .....good at cooking......

10. If you want to keep fit, you must play spoets

-> unless ..you play sports , you can't keep fit ...

11. my family own a holiday flat and that's why we always go to the same place

-> if .................my family did not own a holiday flat, we'd not go to the same place.......................

12. I don't answer the phone becayse I didn't know it was you

-> I would ................rather not answer the phone ............

13. Jenny was always on the time until she started going out with Adrian

-> Jenny never used ....to be late until she started going out with adran.....................

14. the dentist will have to take out the infected tooth

-> the infected tooth ...will have to be taken out by the dentist...................

15. chocolate causes some people come out in sports

-> chocolate makes ......some people come out in sports....................

16. It's a shame you didn't tell me earlier

-> I wish .......you had tole me earlier...............

17. they've been living here for six years now

-> they moved ......here 6 years ago.........................

18. '' you shouldn't spend your weekend in the city''

-> she advised me .....not to spend my weekend in the city................

19. '' can you give me a ride to school ''

-> he asked his friend ......if he could give him a ride to school.................

20. do you have a postman deliver the newspaper every day?

-> do you have the newspaper ..delivered by a post man every day?...................

21. I felt tired after a long trip, so I went to bed early

-> felling tired ........after a long trip , I went to bed early....................

What impression do you have in Vietnam?

What are you going to do tomorrow?

Teachers are the real holder of knowledge, enlightenment and prosperity using which they nourish and prepare us for our life. They serve as source of lighting lamp in our lives. It is our teachers who stand behind our success. Out teachers too have lots of daily routine problems just like us and our parents but they always keep their teaching profession at top and attend schools or colleges to complete their job responsibilities. Nobody say them thanks for their priceless job. So, we as students have some responsibility towards our teachers at least we can say them thanks once a year.

Teacher’s day is celebrated every year on 5th of September to pay honour to our selfless teachers and their priceless job. 5th of September is a birth anniversary of our earlier President Dr. Sarvapalli Radhakrishnan who had requested to celebrate his birthday as the teachers day to respect teachers all over India. He was great fond of the teaching profession. Our teachers shape us to be academically wonderful and morally good by enhancing our knowledge, skill and confidence level. They always promote us to do every impossible thing possible to do better in the life. Teacher’s day is celebrated with great joy and enthusiasm by the students. They say give them lots of greeting orally or through greeting cards. :)

B. complete the following sentences

1.Today is not sunday, so the pupils can't go camping

-> if ..........TODAY WERE SUNDAY, THE PUPILS COULD GO CAMPING..................................................

2. I got lost because I didn't have a map

->if..........I HAD HAD A MAP , I WOULDN'T HAVE GOT LOST................................................

3.His friends were late, so they missed the train.

->if........HIS FRIEND HADN'T BEEN LATE, THE WOULDN'T HAVE MISSED THE TRAIN...................................................

4. Because I don't know the answer, I can't tell you.

->if................I KNEW THE ANSWER , I COULD TELL YOU............................................

5. He will come here next week, he will phone you

->if..........HE COMES HERE NEXT WEEK , HE WILL PHONE YOU.....................................................

6. She doesn't visit her uncle because she lives very far.

->if.....................SHE DIDN'T LIVE VERY FAR , SHE WOULD VISIT HER UNCLE...................................................

7. It rains heavily now, so we can't finish our work.

->if..................IT DIDN'T RAIN HEAVILY NOW , WE COULD FINISH OUR WORK.........................................................

8. The cup of coffe was too hot for me to drink.

->if.............THE CUP OF COFFEE HADN'T BEEN SO HOT , I COULD HAVE DRUNK IT..........................................................

9. My mother cannot give me any advice because she is not here now.

->................IF MY MOTHER WERE HERE NOW , SHE COULD GIVE ME SOME ADVICE...................................................

10. Tomorrow it may be fine, then we'll go boating.

->...............IF TOMORROW IT IS FINE , WE WILL GO BOATING.....................................................

V. Turn these sentences into passive voice:

1. They speak English in almost every corner of the world.

...............E IS SPOKEN IN ALMOST CORNER OF THE WORLD.............................................................................

2.The students are writing the letters now.

................THE LETTERS ARE BEIGN WRITTEN BY THE STUDENTS NOW....................................................

3. She hasn't finished the letter yet.

................THE LETTER HASN'T BEEN FINISHED YET............................................

4. No one has signed this cheque yet.

...................THIS CHEQUE HASN'T BEEN SIGHNED YET............................................

5. They are building a new supermarket in this street.

......................A NEW SUPERMARKET IS BEING BUILT IN THIS STREET.........................................................................

6. The storm har delayed the train for one hour.

....................THE TRAIN HAS BEEN DELAYED FOR 1 HÔUR.......................................................

7. They have provided victims with food and clothing

...................VICTIMS HAVE BEEN PROVIDED WITH FOOD AND CLOTHING.............................................

8. they spend a lot of money on advertising every year

......................A LOT OF MONEY IS SPENT ON ADVERTISING EVERY YEAR.................................

9. people are using computer in all kinds of work

....................COMPUTER IS BEING USED IN ALL KINDS OF WORK............

10. nobody has ever treated me with such kindness

......................I HAVE NEVER BEEN TREATED WITH SUCH KINDNESS...................

11. his parents advised him to study hard for his exams

.....................HE WAS ADVISED TO STUDY HARD FOR HIS EXAMS BY HIS PARENTS...........................

12. he didn't invite her to his birthday party

........................SHE WASN'T INVITED TO HIS BIRTHDAY PARTY...............

13. someone was cleaning the windows when I arrived

.........................THE WINDOWS WERE BEING CLEANED WHEN I ARRIVED....................

14. they gave me two hours to make a decision

.............................I WAS GIVEN 2 HOURS TO MAKE DECISION.............

15. they held the 22nd SEA GAMES in viet nam

.......................THE 22ND SEA GAMES WAS HELD IN VN........................

16. they build this church in the nineteenth century

......................THIS CHURCH WAS BUILT IN NINETEENTH CENTURY......

17. an official had given Mr. Pike a driving test

.................................MR.PIKE HAD BEEN GIVEN A DRIVING TEST BY AN OFFICIAL....................

18. the workers were building a college when the came

.......................A COLLEGE WAS BEING BUILT BY THE WORKERS WHEN THEY CAME...................

19. the villagers gave us a cordial welcome

..........................WE WERE GIVEN A CORDIAL WELCOME BY THE VILLAGERS..............................

20. nobody informed the polite that there had been a mistake

.............................THE POLITE WASN'T INFORMED THAT THERE HAD BEEN A MISTAKE...................................

21. they will hold an international conference in Ha Noi next month

.....................AN INTERNATIONAL CONFERENCE WILL BE HELD IN HA NOI NEXT MONTH..................................................

22. someone will tell you what you have to do whwn you arrive

...............................YOU WILL BE TOLD WHAT YOU HAVE TO DO WHNE YOU ARRIVE..............

23. someone will give you your tickets as the airport

.....................YOUR TICKETS WILL BE GIVEN TO YOU AT THE AIRPORT..................................

24. the robber forced the cashier to hand over the money

..................................THE CASHIER WAS FORCED TO HAND OVER THE MONEY BY THE ROBBER ...............................

25. they held the 2nd PARA GAMES in Viet Nam

................................THE 2ND PARA GAMES WAS HELD IN VN .............................

26. people of this town are talking about her very much

...............................SHE IS BEING TALKED AOUT VERY MUCH BY PEOPLE OF THIS TOWN...........................................

27. the earthquake has caused considerable damege

.......................CONSIDERABLE DAMAGE HAS BEEN CAUSED BY THE EARTHQUAKE..........................................

28.they haven't moved anything since he left home

.....................ANYTHING HASN'T BEEN MOVED SINCE HE LEFT HOME...............................................

29. they were discussing the problem when we came

.......................THE PROBLEM WAS BEING DISCUSSED WHEN WE CAME...................................

30. you should keep dangerous chemicals in safe places

...................DANGEROUS CHEMICALS SHOULD BE KEPT IN SAFE PLACES...................................................

B. complete the following sentences

1.Today is not sunday, so the pupils can't go camping

-> if ......today was Sunday, the pupils would go camping..........

2. I got lost because I didn't have a map

->if....I had had a map, I wouldn't have got lost........

3.His friends were late, so they missed the train.

->if.....his friends hadn't been late, they wouldn't have missed the train......

4. Because I don't know the answer, I can't tell you.

->if....I knew the answer, I could tell you.......

5. He will come here next week, he will phone you

->if....he came here next week, he would phone you.......

6. She doesn't visit her uncle because she lives very far.

->if.....she didn't live very far, she would visit her uncle.......

7. It rains heavily now, so we can't finish our work.

->if.....it didn't rain heavily now, we could finish our work.......

8. The cup of coffe was too hot for me to drink.

->if....the cup of coffee hadn't been hot, I could have drunk it.......

9. My mother cannot give me any advice because she is not here now.

->......If my mother was here now, she could give me some advice......

10. Tomorrow it may be fine, then we'll go boating.

->......If tomorrow it might be fine, we would go boating.......

V. Turn these sentences into passive voice:

1. They speak English in almost every corner of the world.

.........English is spoken in almost every corner of the world.......

2.The students are writing the letters now.

.......The letters are being written by the students now.......

3. She hasn't finished the letter yet.

.........The letter hasn't been finished yet........

4. No one has signed this cheque yet.

........This cheque hasn't been signed yet..........

5. They are building a new supermarket in this street.

........A new supermarket is being built in this street......

6. The storm har delayed the train for one hour.

........The train has been delayed for one hour by the storm.......

7. They have provided victims with food and clothing

.......Victims have been provided with food and clothing..........

8. they spend a lot of money on advertising every year

.....A lot of money is spent on advertising every year......

9. people are using computer in all kinds of work

........Computer is being used in all kinds of work .......

10. nobody has ever treated me with such kindness

........I haven't been treated with such kindness........

11. his parents advised him to study hard for his exams

.........He was advised to study hard for his exams by his parents......

12. he didn't invite her to his birthday party

.......She wasn't invited to his birthday party....

13. someone was cleaning the windows when I arrived

.....The windows were being cleaned when I arrived......

14. they gave me two hours to make a decision

....I was given two hours to make a decision.....

15. they held the 22nd SEA GAMES in viet nam

......The 22nd SEA GAMES was held in Viet Nam....

16. they build this church in the nineteenth century

......This church was built in the nineteenth century.......

17. an official had given Mr. Pike a driving test

.....Mr Pike had been given a driving test by an official......

18. the workers were building a college when the came

......A college was being built by the workers when they came......

19. the villagers gave us a cordial welcome

......We was given a cordial welcom by the villagers......

20. nobody informed the polite that there had been a mistake

........The polite wasn't informed that there had been a mistake.......

21. they will hold an international conference in Ha Noi next month

........An international conference will be held in Ha Noi next month .........

22. someone will tell you what you have to do whwn you arrive

.......You will be told what you have to do when you arrive ......

23. someone will give you your tickets as the airport

......You will be given your tickets as the airport......

24. the robber forced the cashier to hand over the money

.........The casher was forced to hand over the money by the robber........

25. they held the 2nd PARA GAMES in Viet Nam

......The 22nd SEA GAMES was held in Viet Nam..........

26. people of this town are talking about her very much

.........She is being talked very much by people of this town.........

27. the earthquake has caused considerable damege

.......Considerable damage has been caused by the earthquake.....

28.they haven't moved anything since he left home

.....Nothing has been moved since he left home........

29. they were discussing the problem when we came

.......The problem was being discussed when we came...........

30. you should keep dangerous chemicals in safe places

.......Dangerous chemicals should be kept in safe places........

B. Choose the word or phrase - a, b, c or d - that best completes the sentences.

1.Our school has managed __________ a lot of books to distribute to the children in a village school.

a. to collect b. collecting c. with collecting d. on collecting

2.___________ to get throught to Jack for days now. Either she's away or her phone's out of order.

a. I tried b. I had tried c. I was trying d. I've been trying

3. Over the past 50 years, many serious illnesses ___________ under control.

a. brought b. was brought c. have bought d. have been brought

4. Do you like the "Harry Potter" film series? - Well, after __________ the books. I was a bit disappointed.

a. read b. having read c. being read d. I have read

5.Because of road works, traffic _______ to one lane in each direaction.

a. restricts b. will restrict c. has restricted d. is restricted

6. She _________ five years ago today; therefore her request for a raise is defi-nitely worth reviewing.

a. is being promoted b. promoted c. was promoted d. has been promoted

7. After he _________, he continued to take classes to upgraded his skills.

a. hired b. has hired c. had hired d. was hired

8. He _______ in public on the occasion of his daughter's wedding.

a. last saw b. has last seen c. was last seen d. was seeing last

I. reported speech:

1. they asked me '' what were you doing at 7 o'clock yesterday when we called you?''

-> They asked me what I had been doing at 7 o'clock the previous day when they had called me.

2. he said to her'' when do you leave this place?''

-> He asked her when she left that place.

3. we asked '' what time does the plane arrive?''

-> We asked what time the plane arrived.

4. I asked ''where did you go last night, John?''

-> I asked John where he had gone last night.

5. '' who put those books here, July'' her mother said

-> July's mother asked her who had put those books there.

6. '' was your mother at home yesterday?'' he asked me

-> He asked me if my mother had been at home the day before.

7. '' are you anggy?'' he asked

-> He asked if I was angry.

8. '' did they tell you when they left ?'' she said to me

-> She asked me if they had told me when they had left.

9. '' are you wrearing your overcoat, Ann?'' asked she

-> She asked Ann if she was wearing her overcoat.

10. mr.Smith said to me'' where will you spend your summer vacation?''

-> Mr. Smith asked me where I would spend my summer vacation.

11. she said '' I can't find my umbrella''

-> She said she couldn't find her umbrella.

12. they said'' we are learning English now''

-> They said they were learning English then.

13. '' my friend is comming next week'', tom said

-> Tom said his friend was coming the following week.

14. '' I'll help my mum with housework this weekend''

-> He said he would help his mum with housework that weekend.

15. '' we shall overcome this difficulty'', they said

-> They said they shall overcome that difficulty.

16. '' my father is a doctor here'' my friend said

-> My friend said his father was a doctor there.

17. '' I am going on holiday tomorrow'' the boy said to his neighbor

-> The boy said to his neighbor that he was going on holiday the following day.

18. '' you will have to finish all these exercises before next week'' the teacher said to hisstudents

-> The teacher told his students they would have to finish all those exercises before the following week.

19.'' I came back here early yesterday'' she said

-> She said she had come back there early the previous day.

20. '' I've broken the vase'' she said

-> She said she had broken the vase.

21. '' I will never see you again'' the boy said to the girl

-> The boy told the girl he would never see her again.

I. change these sentences into passive voice

1. I'll go by train and my friend will meet me at the station.

=> I'll be taken by train and met at the station by my friend.

2. We put up a notice about the trip on the notice board yesterday.

=> A notice about the trip was put up on the notice board yesterday.

3. The teacher is going to explain this problem to us.

=> This problem is going to be explained to us by the teacher.

4. How much did they pay you?

=> How much were you paid?

5. The police are following the suspects.

=> The suspects are being followed by the police.

6. A woman I know has just told me about it.

=> I have just been told about it by a woman I know.

7. A sudden increase in water pressure may break the dam.

=> The dam may be broken by a sudden increase in water pressure.

8. Nobody knows anything about Brenda's family.

=> Nothing about Brenda's family is known.

9. Many people believe that air pollution is going to be much worse in the next decade.

=> It is believed that air pollution is going to be much worse in the next decade.