1. The two students talked as if they _____ friends for years.
A. should be　　　 B. would be
C. have been　　   D. had been
2. It is important that I _____ with Mr. Williams immediately.
A. speak　　　　　 B. spoke
C. will speak　　　 D. to speak
3. I enjoyed the movie very much. I wish I _____ the book from which it was made.
A. have read　　B. had read　　C. should have read　 D. are reading
4. You are late. If you _____ a few minutes earlier, you _____ him.
A. come; would meet　　　　　B. had come; would have met
C. come; will meet 　　D. had come; would meet
5. He looked as if he _____ ill for a long time.
A. was　　　　　 B. were　　C. has been　　 D. had been
6. If the doctor had come earlier, the poor child would not _____.
A. have laid there for two hours  B. have been lied there for two hours
C. have lied there for two hours　D. have lain there for two hours
7. I wish that I _____ with you last night.
A. went　　　　 　B. could go　　C. have gone　　　D. could have gone
8. Let’s say you could go there again, how _____ feel?
A. will you　　　　　B. should you　　C. would you　　　　 D. do you
9. I can’t stand him. He always talks as though he _____ everything.
A. knew 　　 B. knows　　C. has known　　 　　　　　　D. had known
10. _____ the fog, we should have reached our school.
A. Because of　 　B. In spite of　　C. In case of　　 D. But for
11. If you had told me in advance, I _____ him at the airport.
A. would meet　B. would had metC. would have met　 D. would have meet
12. Mike can take his car apart and put it back together again. I certainly wish he_____ me how.
A. teaches 　　B. will teach　　C. has taught　　　D. would teach
13. I would have told him the answer had it been possible, but I _____ so busy then.
A. had been　　　B. were　　C. was　　　 D. would be
14. He’s working hard for fear that he _____.
A. should fall behind　B. fell behind　C. may fall behind　 D. would fallen behind
15. If it ____another ten minutes, the game would have been called off.
A. had rained　B. would have rained　　C. have seen　　 D. rained
16. He suggested that they _____ use a trick instead of fighting.
A. should　　　　　　　 B. would　　C. do　　　 D. had
17. My father did not go to New York; the doctor suggested that he _____ there.
A. not went　　　　　 B. won’t go　　C. not go　　 D. not to go
18. I would have gone to the meeting if I _____ time.
A. had had　　　　　 B. have had　　C. had　　　 D. would have had
19. Would you rather I _____ buying a new bike?
A. decided against　　　B. will decide against
C. have decided　　　　 D. shall decide against
20. You look so tired tonight. It is time you _____.
A. go to sleep　　B. went to sleep　　C. go to bed　 D. went to bed

【解析】

1. 答案D. as if后面如果表示真实情况就不用虚拟。
2. 答案A. It is important that是主语从句的虚拟语气，从句用sb. should do的形式。
3. 答案B. wish后面用虚拟语气，表示与过去事实相反用过去完成时。
4. 答案B. 条件句表示与过去事实相反，主句用过去将来完成时，从句用过去完成时。
5. 答案D. as if后面是真实情况，不虚拟。
6. 答案D. lain是lie的过去分词，表示“躺”。
7. 答案D. could have done表示“本来可以”。
8. 答案C. 与将来相反的虚拟语气，主句用过去将来时。
9. 答案A. as if表示不可能发生的事情时用虚拟语气。
10. 答案D. but for表示“要不是……的话”，通常与虚拟语气搭配使用。
11. 答案C. in advance表示“事先”，表示与过去事实相反的虚拟语气。
12. 答案D. wish的宾语从句表示发生在将来的愿望用过去将来时。
13. 答案C. but的并列句表示真实情况，不用虚拟语气。
14. 答案A. for fear that后面的状语从句用sb. should do的形式。
15. 答案A. 表示与过去事实相反，主句用过去将来完成时，从句用过去完成时。
16. 答案A. suggest后面的宾语从句用sb. should do的形式。
17. 答案C. suggest后面的从句用sb. should do的形式，should可以省略。
18. 答案A. 表示与过去事实相反，从句用过去完成时。
19. 答案A. would rather的宾语从句用sb. did的形式。
20. 答案D. It is time后面的定语从句用sb. did的形式。