1.doesn't drink/drinks

2.is

3.do you do

4.circles

5.see

6.don't eat

7.make

8.isn't grown

9.causes

10.saw

11.writes

12.do you learn/teachs

13.go/went

14.introduced

15.was/wasn't have

16.to come

17.didn't go

18.isn't rain

19.learnt

20.talking

Complete the sentences with the correct form of the verbs in the brackets.

1. She (not drink) _DIDN'T DRINK________ coffee last night. She (drink) _DRANK______ Coca Cola.

2. He (send )__SENT______ you a check last Sunday. ___HAVE______ you ( receive) __RECEIVED________ it yet ?

3. She (make) _MADE________ herself a cup of coffee before (sit down) __SITTING DOWN_______ on her chair and _FINISHING______ ( finish) her work.

4. It looked like someone( break) __BROKEN________ the window with a hammer some time before.

5. After Dr. Johnson ( examine) ___EXAMINED_____ her, he (give)_GAVE________ her a prescription.

6. My family (build) _BUILT_________ a basement to shelter when I ( be) _WAS_____ young because at the time, hurricanes (happen) _HAPPENED________ commonly.

7. We (go) _GO______ to the doctor because we (be) _ARE____ sick.

8. It was the first time I (see)..HAVE SEEN............. a tornado in my country.

9. Her grandfather (die) __DIED_____ 20 years ago. She (never meet) _HAS NEVER MET__________ him before.

10. The storm ( become) _BECAME________ stronger after the place ( take off) __HAS TAKEN OFF________ for several minutes.

Complete the sentences with the correct form of the verbs in the brackets.

1. She (not drink) didn't drink coffee last night. She (drink) drank Coca Cola.

2. He (send ) sent you a check last Sunday. Have you ( receive) received it yet ?

3. She (make) makes herself a cup of coffee before (sit down) sitting down on her chair and finishing ( finish) her work.

4. It looked like someone( break) broke the window with a hammer some time before.

5. After Dr. Johnson ( examine) had examined her, he (give) gave her a prescription.

6. My family (built) built a basement to shelter when I ( be) was young because at the time, hurricanes (happen) happened commonly.

7. We (go) go to the doctor because we (be) are sick.

8. It was the first time I (see) had seen a tornado in my country.

9. Her grandfather (die) died 20 years ago. She (never meet) has never met him before.

10. The storm ( become) became stronger after the place ( take off) had taken off for several minutes.

1. In some areas water has to be boiled to ___purify_____ it. (pure)

2. He examined the parcel __suspiciously______, as he had no idea what it could be. (suspect)

3. How do you ____differentiate____ the real painting from the fake one? (different)

4. Don’t worry about the volcano. It’s been ___inactive_____ for years. (act)

5. Leisure habits won’t change much in the _____foreseeable___ future. (see)  

6. The conditions in the man’s prison were ____inhuman____. (human)

7. I object strongly to the ______commercialization__ of sport. (commerce)

8. A list of ____forthcoming____ events for the autumn is being prepared. (come)

9. Most people who work feel that they are __underpaid______. (pay)

10. They frequently ____immobilise____ the traffic as they march through the streets.(mobile)

Question I: put the verbs in brackets into the correct form.( câu điều kiện loại 1)

1. If we( recycle).......recycle..... more, we help the earth.

2. factories( not dump).......won't dump..........waster into rivers if the government fine them heavily.

3. if people travel to work by bus, there( be)..will be.... fewer car fumes.

4. we( save) ...will save.......thousands of trees if we don't waste paper.

6. if the factory( continue)........continues.... dumping poison into the lake, all the fish and other aquatic animals will die.

7. if we recycle mỏe, we( help).........will help............. the earth.

8. if people ( travel)...........travel........ to work by bus, there will be fewer car fumes.

9. we save tthusands of trees if we( not waste).................don't waste paper.

10. factories don't dump waste into rivers if the govenment( fine).......fine.......... them heavily.

Question II. put the verbs in brackets into the correct form.

1. if he( study)......studies........ harder, he can passan exam.

3. if you study harder, you(pass)......will pass............ the exam.

4. if you are kind to me, I(be)......will be............good to you.

5, if he( give)............gives............up smoking,as his doctor orders, he will be soon well again.

6. you( not pass)......will not pass........your driving test unless you drive more carefully.

7. he'll be ill if he( not stop).......does not stop...........worrying so much.

8. we'll go to the beach tomorrow if it( be)......is................... nice.

Question III. put the verbs in brackets into the correct form.( câu điều kiện loại 2)

1. if I were you, I(look)....would look.............. for a new place to live.

3. if there were fewer cars on the road, there(be).....would be................ less pollution.

4. if people really cared about the environment, they( not dump)...........wouldn't dump.......waste into the lake.

5. if there was no fresh water in the world, what(happen).....would happen........

6. if you (be)..........were.......the president, what would you do to help the environment?

1. If we( recycle).......recycle..... more, we help the earth.

2. factories( not dump).......won't dump..........waster into rivers if the government fine them heavily.

3. if people travel to work by bus, there( be)..will be.... fewer car fumes.

4. we( save) ...will save.......thousands of trees if we don't waste paper.

5. if we use water carefully, more people( have)..will have..fresh water.

6. if the factory( continue)........continues.... dumping poison into the lake, all the fish and other aquatic animals will die.

7. if we recycle mỏe, we( help).........will help............. the earth.

8. if people ( travel)...........travel........ to work by bus, there will be fewer car fumes.

9. we save tthusands of trees if we( not waste).................don't waste paper.

10. factories don't dump waste into rivers if the govenment( fine).......fine.......... them heavily.

Question II. put the verbs in brackets into the correct form.

1. if he( study)......studies........ harder, he can passan exam.

2. she may be late if she( not hurry)....does not hurry..............

3. if you study harder, you(pass)......will pass............ the exam.

4. if you are kind to me, I(be)......will be............good to you.

5, if he( give)............gives............up smoking,as his doctor orders, he will be soon well again.

6. you( not pass)......will not pass........your driving test unless you drive more carefully.

7. he'll be ill if he( not stop).......does not stop...........worrying so much.

8. we'll go to the beach tomorrow if it( be)......is................... nice.

Question III. put the verbs in brackets into the correct form.( câu điều kiện loại 2)

1. if I were you, I(look)....would look.............. for a new place to live.

2. if Lan wasn't ill, she( join)........would join.. out tree plating activity.

3. if there were fewer cars on the road, there(be).....would be................ less pollution.

4. if people really cared about the environment, they( not dump)...........wouldn't dump.......waste into the lake.

5. if there was no fresh water in the world, what(happen).....would happen........

6. if you (be)..........were.......the president, what would you do to help the environment?

Ex 3. Give the correct form of the verbs:

1. She won't finish it on time if she ....doesn't  start........ (not start) right now.

2. She .....would get....... (get) angry if you  told her.

3. If I .....ask.......(ask) him, he won't come.

4. It will be a disaster if they ........don't help.... (not help) us.

5. If you .......had..... (have) something to eat, you wouldn't felt sick.

6. I wouldn't risk it if I ........were.... (be) you.

7. She would get fat if she ..didn't stop.......... (not stop) eating.

8. If you take my advice, you ............will be............ (be) happy.

9. What would you do if you ............were............ (be) me?

10. I will be unhappy if you ..........leave.............. (leave) me. 

Ex 4. Rewrite these sentences, unchange their meaning

1. He can’t go out because he has to study for his exam.

=> If …………he didn't have to study for his exam, he could go out…………………………………………………………..

2. She is lazy so she can’t pass the exam.

=> If ……she weren't lazy, she could pass the exam………………………………………………………………..

3. He will pay me tonight; I will have enough money to buy a car.

=> If ……he pays me tonight, I will have enough money to buy a car.………………………………………………………………..

4. He smokes too much; that’s why he can’t get rid of his cough.
=> If ……he didn't smoke too much, he could get rid of his cough. ………………………………………………………………..

5. She is very shy, so she doesn’t enjoy the party.
=> If ……she weren't shy, she would enjoy the party. ………………………………………………………………..

6. I will get a work permit. I will stay for another month.
=> If ……I get a work permit, I will stay for another month.………………………………………………………………..

7. He doesn’t take any exercises. He is so unhealthy
=> If ……he took some exercises, he wouldn't be unhealthy………………………………………………………………..

8. I don’t have an umbrella with me so I get wet.

=> I wouldn’t .…get wet if I had an umbrella………………………………………………………..

9. I call the police because you don’t leave me alone.

=> If ……you leave me alone, I won't call the police………………………………………………………….

10. You drink too much coffee, that’s why you can’t sleep.       

=> If you …didn't drink too much coffee, you could sleep.       ……………………………………………………………..

Ex3.

1.doesn't start

2.would get

3.ask

4.don't help

5.had had

6.were

7.didn't stop

8.will be

9.were

10.leave

1,am-to eat

2, is she-is

3,goes-is shining

4, Does Mary go

5, are

6,learn

7,to drink

8,Do you write

1. am; to eat

2. is she from ; is

3. goes; is shining 

4. Is Mary go

5. is

6. learn

7. to drink 

8. Are you writing 

1.am,eating

2.come,comes

3.bỏ

4.are Mary go camping .....

5 is

7drinking

8 Are you writing

1 works will pass

2 come will phone

3 will feel do not give

4 goes will be

5 can know do not reveal

6 eats will be

7 do not hurry will miss

8 see

9 had would you go

10 cooks

1. If I meet him, I will tell him to come to see you immediately.

2. If he had the money, he could afford a new car.

3. If I were you, I could go to that seminar for more expertise.

4. You can do everything more perfectly if you listen to what I say.

5. If he wins the contest this time, he will be very rich.

6. If she worked lazily, she would be tired.