1. Do morning exercise regularly, and you will be fit.
If_________________________________________________________________
2. Drive carefully, and you don’t have accidents
If_________________________________________________________________
3. Work harder and you can improve your English.
If ________________________________________________________________
4. You practice your English regularly , or your English isn’t improved.
If_________________________________________________________________
5. Be careful or you ‘ll break the vase.
If_________________________________________________________________
6. Work harder or you’ll get poor marks.
If_________________________________________________________________
7. With their enough hard work, they can pass the exam with flying colors.
If they work ________________________________________________________
If they don’t work
8. With luck , she may get a good job .
If she is ______________________________________________________________
If she isn’t ____________________________________________________________

1. If you (be not) ______________ careful , you’ll cut yourself with that knife.
2. If you (want)______________ to attend medical school , you must study hard.
3. If you (not stop )______________daydreaming, you won’t understand the lesson.
4. If you learn the lessons carelessly , you (get ) _____________ poor marks.
5. If you don’t do exercise regularly , you (not get fit ) __________________.

giúp em với ạ

Cho tam giác ABC cân tại A, nội tiếp đường tròn (O). Đường cao AH cắt (O) tại D.

a) Giaỉ thích vì sao AD là đường kính của đường tròn (O)

b) Cho BC=24cm, AC=20cm. Tính AH và bán kính đường tròn (O)?

Cho tam giác ABC có 3 góc nhọn. Vẽ đường tròn tâm O, đường kính BC, lần lượt cắt AB và AC tại D,E; BE cắt CD tại H. Chứng minh AH vuông góc BC

giúp em với ạ, em cần rất rất gấp ạ

1. It is raining heavily, so they can’t go out.

 A.They wish they could go out, so it stopped raining.

 B.They wish it would stop raining, so they can go out.

 C.They wish it stops raining so that they could go out.

 D.They wish it would stop raining so that they could go out.

2. He wishes they  ____________ here to see him now. 

A.are

 B.can be  

 C.were

 D.would be

3. I haven’t seen Mary ____________

 A.two weeks ago

 B.since two weeks

 C.yesterday

 D.for two weeks

4. This is the first time my sister ___________________ the traditional costume.  

 A.wore

 B.wears

 C.has worn 

D. is wearing

5. My mother (teach) ______________________ English in this school since we moved here.

 A.has been taught

 B.has been teaching

 C.taught

 D.was teaching

 6. My neighbors are always making a  lot of noise at night. I wish they _______________ a lot of noise at night.

 A.can stop making

 B.stop make

 C.didn’t make

 D.wouldn’t make

7. They started doing their homework two hours ago.

 A.They have done their homework for two hours ago.

 B.They began to do their homework since two hours.

 C.They have started to do their homework for two hours.

 D.They have done their homework for two hours.

8. /of Hanoi/ about 40 kilometers/ is/ to the north / My home village /. /

 A.To the north of Hanoi my home village is about 40 kilometers.

 B.My home village is about 40 kilometers to the north of Hanoi.

 C.My home village to the north of Hanoi is about 40 kilometers.

 D.About 40 kilometers my home village is to the north of Hanoi.

10. Her parents greatly encouraged her to enter the contest.

 A.She was greatly encouraged her parents to enter the contest.

 B.She is greatly encouraged to enter the contest by her parents.

 C.She was greatly encouraged to enter the contest by her parents.

 D.She has been greatly encouraged to enter the contest by her parents.

11.I normally have coffee for breakfast.

 A.I am used to have coffee for breakfast.

 B.I am not used to have coffee for breakfast.

 C.I am not used to having coffee for breakfast.

 D.I am used to having coffee for breakfast.

12. / his brother / since / nearly twenty years / Mr. Brown / last saw / It’s / . //

 A.It’s nearly twenty years since Mr.Brown saw his brother.

 B.It’s twenty years since Mr.Brown saw his brother.

 C.It’s twenty years since Mr.Brown last saw his brother.

 D.It’s nearly twenty years since Mr.Brown last saw his brother.

13. /ao dai / was frequently worn / Traditionally, / by / and women / both men /. /

 A.Traditionally, both men was frequently worn aodai by and women.

 B.Traditionally, ao dai was frequently worn by both men and women.

 C.Traditionally, aodai by both men and women was frequently worn.

 D.Traditionally, both men and women was frequently worn by aodai.

14. / a long silk tunic  / consists  /over loose pants / the ao dai /  on the sides  / of /  and worn / that is slit /  . /

 A.The ao dai worn over loose pants consists of a long silk tunic that is slit on the sides.

 B.The ao dai consists of a long silk tunic that is slit on the sides and worn over loose pants.

 C.The ao dai consists of loose pants that is slit on the sides and worn over a long silk tunic.

 D.A long silk tunic consists of the ao dai that is slit on the sides and worn over loose pants.

15. Modern patterns have been added ________________ the Ao dai to make it more fashionable. 

 A.into

 B.to

 C.in

 D.on

16. Don’t forget to add salt to the mixture . This _______________is important.

 A.separation

 B.compulsion

 C.addition

 D.atmosphere

17. Modern patterns have been added ________________ the Ao dai to make it more fashionable. 

 A.into

 B.to

 C.in

 D.on

18.The unit of __________ used in Malaysia is the ringgit.

 A.currency

 B.money

 C.bank-note

 D.change

19. We should ______________ the workload among the teaching staff.

 A.equalize

 B.equality

 C.equally 

 D.equal

20. It’s __________ to call anyone at night.

 A.inconvenience 

 B.inconvenient

 C.convenient

 D.convenience

21. Dreams are rich source of _______________for some writers.

 A.separation

 B.atmosphere  

 C.compulsion

 D.inspiration

22. We can choose basketball or swimming at school. It’s an ________ subject.

 A.primary

 B.compulsory

 C.national

 D.optional

23. My son is old enough to live _________________.

 A.independent

 B.independently  

 C.dependent

 D.dependently  

24. There will be a firework display on the _______________________ Day.     

 A.Independently

 B.Independent

 C.Dependence

 D.Independence

25. The  aodai    ______________________ the grace of Vietnamese women.

 A.symbolizes

 B.symbolize

 C.symbol

 D.symbolic

1. It’s time you _____________working seriously.

 A.start

 B.started

 C.should start

 D.starts

2.  A.   “ Let me introduce myself . I’m Jane . 

   B.    “_______________________________”

 A.It’s my pleasure.

 B.I’m very pleased.

 C.Please to meet you.

 D.Nice to meet you again.

3. Which word has the opposite meaning of the word “convenient”?

 A.unconvenient

 B.inconvenient

 C.incomfortable  

 D.comfortable 

4. People like wearing jeans because they never go _________________.

A.expensive

 B.out of fashion

 C.wear out

 D.fashionable

5. / their own styles /when famous designers / of jeans with / started making / their own labels / jeans became / on them, / high fashion clothing/./

 A.Jeans became high fashion clothing when famous designers started making their own styles of jeans with their own labels on them.

 B.When jeans became high fashion clothing, famous designers started making their own styles of jeans with their own labels on them.

 C.When famous designers started making their own styles of jeans with their own labels on them, jeans became high fashion clothing.

 D.When their own styles of jeans with their own labels on them became high fashion clothing, famous designers started making jeans.

6. Math and Literature aren’t __________________subjects in high schools.

 A.main

 B.compulsory 

 C.adding 

 D.optional 

7. We had an ____________________ picnic in the Botanical Garden.

 A.enjoyable

 B.enjoyment

 C.enjoyably

 D.enjoyable

8. Shall we go somewhere for a drink? ____________________.

 A.I am very thirsty

 B.Yes, we do

 C.Yes, let’s  

 D.Yes, we like

9. In the 1950s, denim became popular ________________young people.

 A.for

 B.to

 C.of

 D.with

10. My neighbors are always making a  lot of noise at night. I wish they _______________ a lot of noise at night.

 A.can stop making

 B.stop make

 C.wouldn’t make

 D.didn’t make

11. Mary __________ write to me last year.

 A.uses to

 B.is used to

 C.was used to

 D.used to

12. I don’t want to depend too much ____________ my parents.

 A.at

 B.for

 C.on

 D.in

1. She doesn’t have a laptop, but she wants to have one.

 A.She used to have a laptop.

 B.She wishes she had a laptop.

 C.She has a laptop but she doesn’t want to use it.

 D.She doesn’t like using her laptop.

2. I __________________think that it would be a great idea to live there.

 A.got used to

 B.use to

 C.used to

 D.was used to

3. The unit of __________ used in Malaysia is the ringgit.

 A.bank-note

 B.money

 C.currency

 D.change

4. They enjoy the tropical ____________ in Vietnam.

 A.friendliness

 B.country

 C.climate

 D.weather

5. We don’t have any food left; ______________, we’re going shopping.

 A.so

 B.therefore

 C.but

 D.because

6. He found the film boring, so he turned the TV off and went to bed .The film was not _______________.

 A.easy 

 B.comfortable

 C.difficult

 D.interesting

7. Lan used to walk _____________ this building on her way to school.

 A.to

 B.past

 C.over

 D.on

8. The antonym of the word “entrance” is ___________.

 A.enter

 B.exist

 C.entry

 D.exit

9. The chairs are _______________ arranged in the meeting room .

 A.separatedly

 B.separated 

 C.separate 

 D.separately

10. My friend has  no difficulty in making a speech in public.

 A.My friend doesn’t get used to making a speech in public.

 B.My friend used to make a speech in public.

 C.My friend is used to making a speech in public.

 D.My friend isn’t used to making a speech in public.

11. She described herself ______________  a correspondent. 

 A.from 

 B.as 

 C.by 

 D.in 

12. People like wearing jeans because the material doesn’t ____________easily.

 A.wear in

 B.wear on

 C.wear out

 D.wear away

13. This lorry is used _____________ vegetables to the markets.

 A.to be carried

 B.to carry

 C.to carrying

 D.carry

14. When was the last time you ___________an action movie ?

 A.watched

 B.watch  

 C.watching

 D.have watched

15. Many people started wearing jeans _______________ they became cheaper.

 A.and

 B.so

 C.because

 D.but

16. I ___________ English here since I graduated from university.

 A.have taught

 B.taught

 C.teach

 D.am teaching

17. Dreams are rich source of _______________for some writers.

 A.compulsion

 B.separation

 C.inspiration

 D.atmosphere  

18. My mother last saw her brother nearly twenty years ago.

 A.The last time my mother saw her brother was nearly twenty years ago.

 B.It has nearly twenty years since my mother last saw her brother.

 C.My mother hasn’t seen her brother for nearly twenty years ago.

 D.The last time my mother saw her brother nearly twenty years ago.

19. The visitors were very impressed by the _______________ of the local people.

 A.uniqueness

 B.friendliness

 C.unkindness

 D.lateness

20. She _______ Peter while she was crossing the street. 

 A.see

 B.saw

 C.seen

 D.was seeing

21. My parents have given my brother a new bike.

 A.My brother has given a new bike by my parents. 

 B.My brother has been given a new bike by my parents. 

 C.My brother has given my parents by a new bike. 

 D.My brother has been given by my parents a new bike

22. We (be) _____________________ close friends since last semester.

 A.have been

 B.was

 C.are

 D.were

1.During the past ten years , the city   ____________________  a lot . 

 A.has been changing

 B.has been changed

 C.have changed

 D.was changed            

2. / We / things and ran / hurriedly gathered / to catch the last bus / to the bus stop / .  /

 A.We hurriedly gathered things and ran to the bus stop to catch the last bus.  

 B.The last bus hurriedly gathered things and we ran to the bus stop to catch.

 C.We gathered things and ran to the bus stop to catch hurriedly the last bus.  

 D.The last bus ran to the bus stop to catch and we hurriedly gathered things.

3. She wishes she (not be)________________ so sick.

 A.weren’t

 B.wouldn’t be

 C.isn’t

 D.wasn’t

4. Since he was eighteen, he’s lived apart and ________________.

 A.dependent

 B.independent

 C.dependently

 D.independently

5. The antonym of the word “entrance” is ___________.

 A.exist

 B.enter

 C.entry

 D.exit

6. “How was your trip?” – “ ___________”

 A.It’s a good idea.

 B.It was wonderful.

 C.Thanks a lot.

 D.Never mind.

7. They enjoy the tropical ____________ in Vietnam.

 A.country

 B.climate

 C.weather

 D.friendliness

8. There will be a firework display on the _______________________ Day.     

 A.Dependence

 B.Independent

 C.Independence

 D.Independently

9. English _____________ all over the world.

 A.is widely spoken

 B.is speaking

 C.widely speaks

 D.is wide spoken

10. / a lot of / Maryam / in Ha Noi / famous places / visited / last week / . //

 A.Maryam visited famous places in Ha Noi last week.

 B.Maryam visited a lot of famous places last week in Ha Noi.

 C.Maryam visited a lot of famous places in Hanoi last week.

 D.Maryam visisted a lot of famous places last week.

11. The synonym of the word “ comprise” is _______________.

 A.call on

 B.catch up with

 C.care for

 D.consist of

12. They have to work on the weekend.

 A.They wish they don’t have to work on the weekend.

 B.They wish they didn’t have to work on the weekend.

 C.They wish they hadn’t to work on the weekend.

 D.They wish they wouldn’t have to work on the weekend.