Exercise 10: Choose the best answer for each of the following sentences. 1. ………………… have enough apples, she’ll make an apple pie this afternoon. A. Should she B. If she C. Will she D. Unless she 2. If you ………………… to me, you wouldn’t have got so much trouble. A. listened B. would listen C. had listened D. would have listened 3. If you don’t know how to spell a word, you ………………… look it up in the dictionary. A. must B. will C. should D. ought 4. If the sun …………………, we ………………… for a walk. A. shines - will go B. shone - will go C. shone - would go D. had shone - would go 5. The campfire ………………… if it ………………… last night. A. wouldn’t be cancelled - hadn’t rained B. wouldn’t have been cancelled - hadn’t rained C. would have been cancelled - hadn’t rained D. will be cancelled - rains 6. But for our parents, we ………………… successful in life. A. will never be B. would never be C. wouldn’t have been D. would have never been 7. If I ………………… my wallet at home this morning, l ………………… money for lunch now. A. leave - will have B. didn’t leave - would have C. hadn’t left - would have D. hadn’t left - would have had 8. It is too bad, Lam isn’t here. If he ………………… here, he ………………… what to do. A. were/ would know B. is/ will know C. had been/ would have known D. was/ would know 9. If we ………………… the plans carefully, we would not have had so many serious mistakes. A. study B. had studied C. studied D. were studying 10. I ………………… will never talk to you again ………………… you apologize me ………………… your being rude. A. if - for B. unless - for C. or - of D. whether - or 11. ………………… you work harder, you will be sacked. A. Whether B. If C. However D. Unless 12. I think you should stop smoking. A. If I am you, I will stop smoking. B. If I were you, I will stop smoking. C. If I were you, I would stop smoking. D. If I had been you, I would stop smoking. 13. If you take the ice out of the fridge, it ………………… A. vaporizes B. melts C. heats D. disappears 14. We should do something to protect water from being polluted ………………… we will have nothing to drink in the future. A. if B. whether C. or D. unless 15. Let’s knock on their door to see ………………… home. A. if they’re B. unless they’re C. whether they were D. if they were 16. Unless we ………………… more snow, we can’t go skiing. A. will have B. have C. have had D. had 17. You’ll fail the exam ………………… you start revising. A. if B. until C. when D. unless 18. Unless you wash the car, you ………………… not drive it at the weekend. A. would B. could C. have to D. may 19. If Peter ………………… his car before the drive, he ………………… the problem of out of petrol. A. checked - will not get B. had checked - would not have got C. checks - will not have got D. would be checking - will not have got 20. 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. 5 sao + 1 câu trả lời hay nhất + 1 cảm ơn