Exercise 1: Choose the best answer to complete these following sentences.
1. They _____________ angry if you didn’t visit them.
A. would be B. should be C. would D. should
2. What would you do if you _____________ a million dollars?
A. win B. won C. had won D. will win
3. What will happen if the air _____________?
A. was polluted B. be polluted C. is polluted D. has polluted
4. He wouldn’t have had an accident if he _____________ more carefully.
A. drives B. drove C. had driven D. was driving
5. If you _____________ better last night, you wouldn’t have been so tired.
A. sleep B. had slept C. was sleeping D. slept
6. If I had noticed him, I _____________ hello to him .
A. say B. said C. would say D. would have said
7. If he _____________ with us now, he _____________ the beauty of the nature of the National Park
A. is / can enjoy B. was/ will enjoy C. had/would enjoyed D. were/ could enjoy
8. Would you mind if I _____________ in the room?
A. smoke B. smoked C. would smoke D. had smoked
9. You can’t get higher result _____________ .
A. if you work hard B. unless you work harder
C. if you worker harder D. unless you will not work harder
10. Can you imagine what____________ if everyone ____________.
A. will happen / can fly B. would happen / could fly
C. had happen / could have flown D. happened / will have flown
11. ____________ for work early, he could have caught the bus.
A. If Peter left B. Peter left C. had Peter left D. If had Peter left
12. Jane ____________ in such a trouble if she had been more carefully when typing the contract.
A. won’t be B. wouldn’t be C. won’t have been D. wouldn’t have been
13. If I____________ his address, I would give it to you.
A know B. would known C. knew D. had known
14. Tom got to the station in time to catch his train.
A. If he had missed it, he would have been late for his interview.

A. In spite of his broken car, Peter will go out for lunch.
B. If his car is not broken, Peter will go out for lunch.
C If his car were not broken, Peter could go out for lunch.
D. Unless his car were not broken, Peter could go out for lunch .
Exercise 2: Choose the best answer to complete these following sentences.
1. If you____________ time, please write to me.
A. have B. had C. have had D. has
2. I shouldn’t go there at night if I ____________ you.
A. am B. was C. be D. were
3. If I ____________ get a pole, I will go fishing.
A. can B. could C. may D. might
4. If you had the chance, ____________ you go fishing?
A. did B. may C. would D. do
5. If you ____________ a choice, which country would you visit?
A. have B. had C. have had D. will have
6. Trees won’t grow____________ there is enough water.
A. if B. when C. unless D. as
7. ____________ she agreed, you would have done it.
A. if B. had C. should D. would
8. If he hadn’t wasted too much time , he ____________ in his examination.
A. would fail B. wouldn’t fail C. wouldn’t have failed D. won’t fail
9. If I had taken that English course, I____________ much progress.
A. had made B. would have made C. made D. would make
10. If I were in your place, I____________ a trip to England.
A. will make B. had made C. would make D. made
11. You ____________disappointed if there ____________no snow for this winter holiday?
A. Would be / was B. will be / is C. will be / are D. could be / is
12. If she ____________yesterday, she would come here with us tomorrow night.
A. finished it B. finishes it C. had finished it D. has finished it
13. If your father weren’t the president of the company, you____________here.

6. If I had had free time, I _____________ shopping.
A. would have gone B. can go C. will go D. will have gone
7. _____________ if you take the map with you.
A. You will get lost B. You won’t get lost C. You get lost D. You got lost
8. If you had come to the party, you _____________ her.
A. would meet B. had met C. would have met D. met
9. I’m not tired enough to go to bed yet. I wouldn’t sleep if I _____________ to bed now.
A. go B. went C. had gone D. would go
10. If I were you, I _____________ that shirt. It’s much too expensive.
A. won’t buy B. don’t buy C. am not going to buy D. wouldn’t buy
11. I decided to stay at home last night. I would have gone out if I _____________ so tired .
A. wasn’t B. weren’t C. wouldn’t have been D. hadn’t been
12. "Did he lose?" "Yes, but if he had tried harder, he_____________ won."
A. might B. might have C. might of D. might has
13. What will I do if no one _____________ me at the airport?
A. meet B. will meet C. meets D. met
14. Jean gets very agitated if her daughter _____________ her once a week.
A. doesn't ring B. didn't ring C. not ring D. don't ring
15. ______________________________.
A. People will die if there is no water and air.
B. If there were no water and air, people would die.
C. People will not die if there is no water and air.
D. If there were no water and air, people would not die.
16. If you_____________ that plane, you _____________ dead now.
A. had caught / would have been B. caught / would be
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C. had caught / would be D. catch / will be
17. I would have said "good bye" to your brother if he_____________ there.
A. could be B. had been C. will be D. will have been
18. If you_____________ what Nam is doing, you _____________ very surprised .

12. You’d earn more money if you_____________more products.
A. to sell B. sell C. sold D. will sell
13. If I_____________so busy yesterday, I would have visited you.
A. were not B. wasn’t C. aren’t D. hadn’t been
14. If you had seen the film, you_____________ it.
A. will enjoy B. would have enjoyed C. would enjoy D. enjoyed
15. She would have gone to the university if she_____________ the opportunity.
A. has B. will have C. had had D. had
16. If he had been more careful, he_____________an accident.
A. would not have had B. will not have C. does not have D. would not have
17. If you’d stayed at home, there _____________any trouble.
A. would not be B. will not be C. is not D. would not have been
18. What would you do if he_____________ tomorrow?
A. resigned B. will resign C. resigns D. to resign
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19. I’ll do it if he_____________ me.
A. asking B. will ask C. asked D. asks
20. If you_____________ for the car, we’d be able to sell it.
A. look B. looks C. looked D. had looked
Exercise 5: Choose the best answer to complete these following sentences.
1. I wouldn’t have believed it if I_____________ it with my own eyes.
A. not to see B. didn’t see C. don’t see D. hadn’t seen
2. What _____________ if you found a burglar in your house?
A. will you do B. do you do C. would you do D. you do
3. If you_____________more slowly, he might have understood you.
A. spoke B. speak C. speaks D. to speak
4. If you_____________careful, you will cut yourself with that knife.
A. are not B. were not C. be not D. not be
5. If she_____________this one, I will bring her another one.
A. don’t like B. doesn’t like C. not like D. to like

19. He _____________late for the train if he_____________at once.
A. would be/ doesn’t start B. will be/ doesn’t start
C. would have been/ didn’t start D. is / hadn’t started
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20. If you _____________late, they_____________ you in.
A. arrive/ would not let B. arrived/ wouldn’t let
C. had arrived/ wouldn’t let D. to arrive/ would not let
Exercise 6: Choose the best answer to complete these following sentences.
1. Unless he_____________more, he won’t get much commission.
A. sell B. sells C. sold D. selling
2. If I _____________you $10, when _____________me?
A. lend/ would you repay B. lend/ will you repay
C. lent/ will you repayD. lend/ would you have repaid
3. If he_____________hard today, _____________a holiday tomorrow?
A. worked/ can he have B. work/ he can have
C. works/ can he have D. had worked/ he can have
4. Ice_____________ into water unless you heat it.
A. don’t turn B. doesn’t turn C. would turn D. would have turned
5. If you_____________ this one, I’ll bring you another.
A. doesn’t like B. will not like C. don’t like D. didn’t like
6. Unless you _____________ more careful, you_____________an accident.
A. are/ will have B. were/ will have C. had been/ would have D. be/ have
7. If I tell you a secret, _____________you promise not to tell it to anyone else?
A. would B. did C. will D. have
8. If you_____________what I say, ask your mother.
A. not believe B. not to believe C. didn’t believe D. don’t believe
9. Unless I _____________a quiet room, I_____________not be able to do any work.
A. had/ will B. have/ will C. has/ would have D. had had/ would have
10. She _____________not open the door unless she_____________who it was.
A. will/ knew B. will/ knows C. would/ knew D. does/ knows

A. see B. seen C. had seen D. saw
3. I___________ ruined her if I bought her everything she asked for.
A. were B. will be C. would have been D. would be
4. I___________ a job easily if I__________a degree.
A. could get/ have B. can get/ had C. could get/ had D. can get/ had had
5. The whole machine __________into pieces if you__________ that screw quickly.
A. felt/ remove B. will fall/ removed C. would fall/ removed D. would fall/ remove
6. I’d go and see him more often if he___________on a bus route.
A. lives B. lived C. had lived D. living
7. What would you have done if the lift_____________struck between two floors at that time.
A. had got B. got C. gets D. getting
8. If you knew you had only six weeks to live, how __________such a short span?
A. did you spend B. will you spend C. would you spend D. would you have spend
9. I’d climb over the wall if there__________so much broken glass on top of it.
A. were B. had been C. are D. is
10. Unless I had known that you were in hospital, I___________you.
A. will visit B. would have visited C. visit D. don’t visit
11. You would have seen my garden at its best if you___________here last week.
A. were B. are C. had been D. be
12. I shouldn’t have believed it if I___________it with my own eyes.
A. had seen B. saw C. hadn’t seen D. didn’t see
13. If I___________a map, I __________the way to the Post Office.
A. had had/ would have lost B. had had/ wouldn’t have lost
C. had/ won’t lose D. have/ wouldn’t have
14. If I___________ that you were coming, I’d have baked a cake.
A. know B. knew C. had known D. didn’t know
15. Had you left that wasp alone, it__________you.
A. would have stung B. wouldn’t sting C. wouldn’t have stung D. would sting
16. Unless I __________that the traffic lights were red, I__________.
A. had realized/ would have stopped B. had realized/ wouldn’t have stopped

A. will take/ realizes B. would take/ doesn’t realize
C. wouldn’t have taken/ had realized D. wouldn’t take/ realized
10. Unless you ________the examination, they_________ a party for you.
A. pass/ won’t celebrate B. passed/ won’t celebrate
C. pass/ will celebrate D. had passed/ would celebrate
11. I should have voted for her if I__________ a vote then.
A. didn’t have B. had C. had had D. have
12. If you go to Paris, where ___________?
A. will you stay B. you stayed C. did you stay D. had you stayed
13. The flight may be cancelled unless the fog__________thick.
A. got B. gets C. didn’t get D. doesn’t get
14. If you__________the instructions carefully, you wouldn’t have answered the wrong questions.
A. read B. had read C. reads D. to read
15. I could repair the roofs myself if I__________a long ladder.
A. have B. had C. has D. had had
16. Unless they turn that radio off, I__________mad.
A. go B. went C. will go D. had gone
17. We’ll have a long way to walk if we__________out of petrol here.
A. got B. get C. didn’t get D. don’t get
18. If you shake the bottle of port- a kind of vine, it________ fit to drink.
A. were not B. is C. won’t be D. would be
19. I’ll probably get lost or he_________with me.
A. goes B. went C. had gone D. doesn’t go
20. You__________many accidents or you drove extremely slowly.
A. will get B. got C. wouldn’t get D. would get
Exercise 9: Choose the best answer to complete these following sentences.
1. You’ll get pneumonia. if you_________your wet clothes.
A. change B. don’t change C. changed D. hadn’t changed
2. If I had known that you couldn’t eat octopus, I________it for our meal.
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16. If I__________again, I think that I would have won in the game.
A. tried B. hadn’t tried C. had tried D. didn’t try
17. Tell him to ring me at 6:00 p.m. if you__________ him.
A. saw B. see C. sees D. had seen
18. Water_________downhill if there ________gravity.
A. will run/ is not B. would run/ weren’t
C. wouldn’t run/ were D. will run/ had been
19. If you__________so fast, he might have understood what happened.
A. hadn’t spoken B. speak C. spoke D. don’t speak
20. If I _________ the party last night, I _________ tired now.
A. hadn’t attended / wouldn’t be B. didn’t attend / wouldn’t be
C. don’t attend / won’t be D. hadn’t attended / won’t be
Exercise 10: Choose the best answer to complete these following sentences.
1. If I _________ the same problem you had as a child, I might not have succeeded in life as well as
you have.
A. have B. would have C. had had D. should have
2. _________ then what I know today, I would have saved myself a lot of time and trouble over the
years.
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A. had I known B. did I know C. If I know D. If I would know
3. Do you think there would be less conflict in the world if all people________ the same language?
A. spoke B. speak C. had spoken D. will speak
4. If you can give me one good reason for your acting like this, _________ this incident again.
A. I will never mention B. I never mention
C. will I never mention D. I don’t mention
5. I didn’t know you were asleep. Otherwise, I__________ so much noise when I came in.
A. didn’t make B. wouldn’t have made C. won’t make D. don’t make
6. Unless you __________ all of my questions, I can’t do anything to help you.
A. answered B. answer C. would answer D. are answering
7. Had you told me that this was going to happen, I________ it.

1. “Would you mind if we ______you by your first name?” -“Not at all. Please call me Tom.”
A. called B. call C. calling D. want to call
2. She can’t get home ______ she has no money.
A. unless B. if C. until D. without
3. If I had known your new address, we ______to see you.
A. came B. will come C. would come D. would have come
4. If we took the 10:30 train, ______ too early.
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A. we would arrive B. we should arrive C. we will arrive D. we may arrive
5. It’s very crowded here. I wish there ______ so many people.
A. aren’t B. weren’t C. haven’t been D. isn’t
6. I wouldn’t go there at night if I ______ you.
A. am B. was C. were D. had been
7. If I ______ get a pole, I’ll go fishing.
A. can B. could C. may D. might
8. If they had enough time, they ______ head south.
A. will B. can C. must D. might
9. If you ______ a choice, which country would you visit?
A. have B. had C. have had D. will have
10. Trees won’t grow ______ there is enough water.
A. if B. when C. unless D. as
11. ______ she agreed, you would have done it.
A. If B. Had C. Should D. Would
12. If you ______ to be chosen for the job, you’ll have to be experienced in the field.
A. want B. wanted C. had wanted D. wants
13. If the doctor had arrived sooner, the boy ______ saved.
A. might be B. have been C. was D. might have been
14. If there ______ enough water, the rice fields could have been more productive.
A. had been B. were C. would be D. are
15. The patient could not recover unless he ______ an operation. [undergo: pass through]

A. had seen B. saw C. would see D. was seeing
9. I wish it ______ a holiday today.
A. were B. will be C. is D. had been
10. “My car broke down when I was leaving Detroit and I had to take the bus.”
-“______, we would have picked you up.”
A. Had we known B. If we have known C. We had known D. If we did know
11. If I ______ as young as you are, I ______ in a boat round the world.
A. were- would sail B. would be – would sail C. were- will sail D. would- would sail
12. If he______tickets yesterday, he ______ on the beach now.
A. had booked- would be lying B. had booked- would have lied
C. booked – would lie D. books- will lie
If you ______ less last night, you ______ so bad today.
A. had drunk- would not have felt B. drank- would not feel
C. had drunk- would not feel D. would have drunk- would not feel
13. It seemed as if he ______ of it before.
A. would never hear B. has never heard C. never heard D. had never heard
14. ______ today, she would get home by Friday.
A. Would she leave B. Was she leaving C. Were she to leave D. If she leaves
15. “He’s a very brave man.” “Yes, I wish I ______ his courage.”
A. have B. had C. will have D. would have
16. ______he______ hard last year, he would have lost the first prize.
A. Hadn’t – studied B. Had- studied C. Didn’t study D. If – had studied
17. We’re going to be late if ______ right now.
A. we not leave B. we didn’t leave C. we won’t leave D. we don’t leave
18. “I wish this city______ so noisy.” “I know. I wish we ______ in the countryside.”
A. isn’t – live B. wasn’t – live C. weren’t- live D. weren’t – lived
19. He acted as though he______ for days.
A. not eat B. hasn’t eaten C. hadn’t eaten D. didn’t eat
20. We ______ the game if we’d had a few more minutes.
A. might have won B. won C. had won D. will win

A. are B. will be C. should D. would be
14. If he had told me the truth, I ______ him.
A. would have not punished B. would not have punished
C. would not punish D. will not punish
15. If they had not given me advice, I ______ again.
A. would have failed B. would fail
C. would have been failed D. wouldn’t fail
16. If it ______, the match will be postponed
A. rains B. has rained C. is raining D. will rain
17. Bill ______ more photographs if he ______ more film.
A. would have taken / had had B. would have taken / had
C. would take / has had D. would take / had had
18. If there ______ no floods last year, the crop ______ better.
A. had been / would have been B. were / would be
C. had / would have been D. was / would have been
19. Had you told me that this was going to happen, I ______ it.
A. would never have believed B. don’t believe
C. hadn’t believed D. can’t believe
20. If I ______ you, I’d get some rest before the game tomorrow.
A. were B. could be C. am D. had been
Exercise 14: Choose the best answer to complete these following sentences.
1. If someone ______ into the store, smile and say, “May I help you?”
A. comes B. came C. come D. could come
2. If I had a chance to do creative work, I ______ happy working in an office.
A. would be B. will be C. would have D. will feel
3. ______ you, I’d think twice about that decision.
A. Were I B. If I had been C. Should I be D. If I am
4. If they ______ soon, I’m not going to wait.
A. don’t come B. won’t come C. hadn’t come D. didn’t come
5. If I ______ hungry, I ______ something. But I am not hungry now.

A. could be B. would be C. become D. must be
19. What ______ if they ______ tomorrow?
A. will you do / don’t come B. would you do / don’t come
C. would you have done / won’t come D. do you do / won’t come
20. He said, “______ watch TV all the evening if you wish.”
A. You may B. You have to C. You need to D. You should
Exercise 15: Choose the best answer to complete these following sentences.
1. If he ______, please tell me.
A. comes B. won’t come C. will come D. come
2. If the earth ______ move around the sun, everything ______ floated.
A. didn’t / would be B. doesn’t / would be C. didn’t / will be D. don’t / would be
3. If I ______ that you were in hospital, I ______
A. had known / would have visited B. had known / would visit
C. knew / would visit D. knew / would have visited
4. If he had taken my advice, he ______ a rich man now.
A. would be B. would have been C. had been D. were
5. Unless you ______ smoking, you ______ better.
A. stop / won’t feel B. stop / will feel C. stopped / will feel D. stopped / would feel
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6. It is a beautiful house, and I ______ it if I ______ enough money, but I cannot afford it.
A. would buy / had B. will buy / have
C. would have bought / had had D. shall buy / have
7. If you are right, I … wrong.
A. am B. will be C. would be D. would have been
8. If I ______ to the party last night, I ______ tired now.
A. had gone / would be B. had gone / would have been
C. went / would be D. went / would have been
9. Joe can’t hear ______. you shout.
A. unless B. if C. providing D. whether
10. You can use my car ______.you drive carefully.