IV. Complete these sentences with should/ shouldn't + infinitive (or a passive form)
using one of these verbs: include, keep, meet, refrigerate-ate, stay, break, tell, warn,
take, play.
1. Those boys ................... football on the street. It's very dangerous.
2. This medicine ................... in a cool place.
3. You...............him about this deal. It's supposed to be absolutely confidential.
4. Here's someone you really .....................

5. She................. in bed all day unless she's ill.
6. According to the label, the jam................ after opening.
7. You'll catch cold if you go out like that. I think you ...........a hat.
8. People ................of the danger of swimming off this beach.
9. This information you send ............. details of courses taken at university.
10. People ....................their promises.

III. Choose the word or phrase that could best explain the underlined word or phrase
in each sentence.
1. If modern technology did not exist, we would never have such precious information.
A. valuable

B. precise

C. confidential

D. detailed

2. Some marine animals are dangerous to humans.

A. living in the mountain

B. living in the ocean

C. living in the forest

D. living in the house

3. The floor was covered in tiny pieces of paper.

A. unimportant

B. many

C. very large

D. extremely small

4. Sperm whales and sharks are carnivores.

A. animals that live in the sea

B. animals that only eat plants

C. fish that aren't born from eggs

D. animals that eat meat

5. We enjoyed the warm water of the Gulf of Thailand.
A. a small sea
B. a large area of ocean almost surrounded by land
C. a part of the sea enclosed by a wide curve of the shore
D. a large area of water surrounded by land

II. Complete the sentences with the words in the box.
challenged; discoveries; overcome; investigating; contribution;
covered; conservation; entrapment; maintained; migrate.
1. Scientists have made many important new.......... of the depth by using modern devices.
2. Community police have made a very positive ................to crime prevention.
3. This new discovery traditional beliefs. Some whales are known to.............into warm
waters to bear their calves.
5. Seventy-five percent of the earth surface is .............by water.
6. Unless the biodiversity were.............marine life would be at stake.
7. Scientists are.....................how the crash occurred.
8. Sperm whale populations are at risk due to hunting and their accidental in
..............fishing nets.
9. What can I do to.................my fear of flying?
10. The government has just set up a wildlife....................project.

I. Circle the word that is pronounced differently from the others.
1. bear leave peace cheap
2. near here ear meat
3. hair chair rain air
4. tour pour four thought
5. gulf hunt sure current
II. Complete the sentences with the words in the box.
challenged discoveries overcome investigating contribution
covered conservation entrapment maintained migrate
1. Scientists have made many important new.......... of the depth by using modern devices.
2. Community police have made a very positive ................to crime prevention.
3. This new discovery traditional beliefs. Some whales are known to.............into warm
waters to bear their calves.
5. Seventy-five percent of the earth surface is .............by water.
6. Unless the biodiversity were.............marine life would be at stake.
7. Scientists are.....................how the crash occurred.
8. Sperm whale populations are at risk due to hunting and their accidental in
..............fishing nets.
9. What can I do to.................my fear of flying?
10. The government has just set up a wildlife....................project.
III. Choose the word or phrase that could best explain the underlined word or phrase
in each sentence.
1. If modern technology did not exist, we would never have such precious information.
A. valuable B. precise C. confidential D. detailed
2. Some marine animals are dangerous to humans.
A. living in the mountain B. living in the ocean
C. living in the forest D. living in the house
3. The floor was covered in tiny pieces of paper.
A. unimportant B. many C. very large D. extremely small
4. Sperm whales and sharks are carnivores.
A. animals that live in the sea B. animals that only eat plants
C. fish that aren't born from eggs D. animals that eat meat
5. We enjoyed the warm water of the Gulf of Thailand.
A. a small sea
B. a large area of ocean almost surrounded by land
C. a part of the sea enclosed by a wide curve of the shore
D. a large area of water surrounded by land
IV. Complete these sentences with should/ shouldn't + infinitive (or a passive form)
using one of these verbs: include, keep, meet, refrigerate-ate, stay, break, tell, warn,
take, play.
1. Those boys ................... football on the street. It's very dangerous.
2. This medicine ................... in a cool place.
3. You...............him about this deal. It's supposed to be absolutely confidential.
4. Here's someone you really .....................

2
5. She................. in bed all day unless she's ill.
6. According to the label, the jam................ after opening.
7. You'll catch cold if you go out like that. I think you ...........a hat.
8. People ................of the danger of swimming off this beach.
9. This information you send ............. details of courses taken at university.
10. People ....................their promises.
V. Give advice to the following people. Use I think ... should or I don't think ... should
and one of these phrases.
go to the dentist take them back to the shop
tell your bank wait
go to work tell them to buy fruit
drive be more careful
write to people work so hard
1. Kate is crying because I knocked her over. We were playing a game.
_____________________________________________________
2. Peter's got a very bad colD.
_____________________________________________________
3. Ann's phone bill was enormous! Three hundred pounds!
_____________________________________________________
4. Keith wants to drive home, but he hasn't got his glasses.
_____________________________________________________
5. I've lost my cheque book and credit cards.
_____________________________________________________
6. My children spend all their pocket money on sweets.
_____________________________________________________
VI. Comment on these situations. Use a type 2 conditional.
1. Alan always overeats at lunch because he never eats breakfast.
If Alan cite breakfast, he wouldn't overeat at lunch.
2. I don't know enough about the machine, so I can't mend it myself.
__________________________________________________________________
3. I don't ride the bus to work every morning because it's always so crowded.
_________________________________________________________________
4. Not enough money is spent on cancer research, so a prevention has not been found.
_________________________________________________________________
5. The wind is blowing harD. so I won't take the boat out for a ride.
_________________________________________________________________
6. Nick can't find the way because he hasn't got a map.
_________________________________________________________________
7. I can't look the word up because I haven't got a dictionary.
_________________________________________________________________
8. Linus is smart, so he finds clever solutions to life's problems.
_________________________________________________________________
VII. Choose the correct completion.
1. I'm not an astronaut. If I...........an astronaut, I ................. my camera with me on the
rocket ship.

3

A. am/ will take B. was/ would take
C. were/ had taken D. was/ would have taken
2. Don't throw aerosol into a fire. An aerosol .......... if you ................ it into a fire.
A. will be exploded/ throw B. would explode/ threw
C. explodes/ will .throw D. can explode/ throw
3. That sounds like a good offer. I.................it if I................you.
A. had accepted/ were B. will accept/ am
C. would accept/ were D. accepted' were
4. Nora is using my car right now. If she................ it back in time. Your welcome to
borrow it.
A. brought .B. would bring C. will bring D. brings
3. If energy ......................inexpensive and unlimited, many things in the world would be
different.
A. is B. was C. had been D. would be
5. If you ............... all of my questions, I ...................... anything to help you.
A. don't answer/ can't do B. didn't answer/ won't do
C. wouldn't answer/ can't do B. wouldn't answer/ couldn't do
4. If I ................... wings,....................... take an airplane to fly home.
A. have/ won't have to B. had/ wouldn't have
C. have/ will have to D. had/ didn't have to
5. 'Here's my phone' number.
'Thanks, I ................you a call if I .................... some help.
A. will give/ will need B. would give/ needed
C. give/ need D. will give/ need
6. If we .......................serious about pollution, we ...................... more money on research.
A. had been/ spent B. were/ had spent
C. were/ would spend D. are/ will spend
7. Sea water is salty. If the oceans.................of fresh water, there ............. plenty of water
to irrigate all of the deserts in the worlD.
A. consisted/ would be B. consisted/ were
C. would consist/ could be D. consist/ will be

 các bạn ơi giúp mk nhé

tìm số tự nhiên x , biết:

(x-7)+(x-8)+(x-9)+...+(x-93)=1392

ai nhanh tick liền

Tìm đa thức A biết x^3-4x^2-4x+1=A.(x^2-5x+1)

99999 + 1 = ???

Ai tk mk thì mk tk lại cho .

I. Finish each of the following sentences in such a way that it means the same as the sentence printed before it.

1. They let their children go to the zoo last Sunday

-> Their children________________________________

2. "Don't do that! Are you mad?" She said me.

-> she told ________________and_______________________

3. Thao wnet out for the evening, but first she washed her hair

-> before____________________________________________

4. Without your help, I wouldn't have been able to finish the report

-> If __________________________________________

5. He didn't return to his native village until the war ended

-> Not until________________________________________

6. Although my foot was injured, I managed to walk to the nearest town

-> In spite of ________________________________________

7. His second attempt on the world record was successful

-> He broke _______________________________________

8. who will Ann meet at the airport?

-> who_______________________________________

9. th flight to Moscow lasted three hours and a half

-> It took _________________________________________

10. I regret not going to the airport to say good bye to him

-> I wish_______________________________________________

II. Use the following words or phrases to make up a complete letter. Make all the changes and additions necessary to produce.

Dear Sir,

1. I/ write/complain / about / work / your company / do / my house / last week.

_______________________________________________________________

2. three men / arrive / Monday / paint / inside walls.

_______________________________________________________________

3. they use / wrong colour / and spill paint / over / carpets.

________________________________________________________________

4. they also break / valuable vase./ Foreman / assure me / they / repaint / walls.

__________________________________________________________________

5. I / go away / on business / not return / until Friday.

__________________________________________________________________

6. all walls / still / same colour.

__________________________________________________________________

7. Foreman also promise / company / pay for / damage to vase.

_______________________________________________________________

8. I / enclose / bill / for this.

__________________________________________________________

9. I / not pay / your bill / decorating / until / house / repainted properly.

_______________________________________________________________

10. I / look forward / hear / you / and get / quick solution / this problem.

_________________________________________________________________

Yours faithfully

Susan