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.
B. If he missed it, he would have been late for his interview.
C. If he had missed it, he would be late for his interview.
D. If he had missed it, he would had be late for his interview.
15. He stepped on the mine, and it exploded.
A. If he doesn’t step on the mine , it doesn’t explode.
B. If he doesn’t step on the mine , it won’t explode.
C. If he didn’t step on the mine , it wouldn’t explode.
D. If he hadn’t stepped on the mine , it wouldn’t have exploded.
16. It may rain this afternoon.I hope it doesn’t because I don’t want the match to be cancelled
A. If it rains, the match is cancelled.
B. If it rains, the match will be cancelled
C. If it rained , the match would be cancelled
D. If it had rained, the match would have been cancelled
17. Unfortunately, I don’t know Philosophy, so I can’t answer your question.
A. If I know Philosophy, I can answer your question.
B. If I know Philosophy, I will be answer your question.
C. If I knew Philosophy, I would be able to answer your question.
D. If I had known Philosophy, I would have been to answer your question.
18. I/ if/ be/ ill/ not/ absent/ school/ from/ be/ yesterday/.
A. If I hadn’t been ill, I wouldn’t be absent from school yesterday
B. If I wasn’t ill, I wouldn’t have been absent from school yesterday
C. If I have been ill, I wouldn’t have been absent from school yesterday
D. If I hadn’t been ill, I wouldn’t have been absent from school yesterday
19. If / parents / my / exam / my / pass / I / be / very / happy / last year.
A. If I had passed my exam last year, my parents would have been very happy.
B. If I pass my exam last year, my parents would be very happy.
C. If I had passed my exam last year, my parents will be very happy.
D. If I will pass my exam , my parents would be very happy.
20. Peter cannot go out for