21. I am sorry that he ______ in such poor health.
A. are    B. shall be    C. were    D. should be
22. That is a good book. You ______ it yesterday.
A. could buy    B. should buy
C. should have bought    D. bought
23. It is high time we ________ home.
A. will go    B. would go    C. have gone    D. went
24. I'd rather that you ________ home.
A. went    B. have gone    C. will go    D. had gone
25. If only I _________ to the lecture！
A. listen    B. will listen    C. am listening    D. had listened
26. —— If he_____，he ______ that food.
   ---- Luckily he was sent to the hospital immediately.
A. was warned， would not take
B. had been warned， would not have taken
C. would be warned， had not taken
D. would have been warned， had not taken
27. I didn't see your sister at the meeting. If she _________，she would have met my brother.
A. has come    B. did come    C. came    D. had come
28. Without electricity，human life ________ quite different today.
A. is    B. will be    C. would have been    D. would be
29. He ________ you more help， even though he was very busy.
A. might have given    B. might give    C. may have given    D. may give
30. If city noises _______ from increasing，people _______ shout to be heard even at the dinner table 20 years from now.
A. are not kept，will have to
B. are not kept，have to
C. do not keep，will have to
D. do not keep，have to
31. Mike's father，as well as his mother，insisted that he ________ home.
A. stayed    B. could stay    C. has stayed    D. stay
32. Mr. Smith insisted that he ________ the work all.
A. had done    B. have done    C. did    D. so
33. Jane would never have gone to the party ________ that Mary would come to see her.
A. has she known    B. had she known    C. if she know    D. if she has known
34. If you had enough money，what ________？
A. will you buy B. would you buy  C. would you have bought D. will you have bought
35. If you ________ that film late last night，you wouldn't be so sleepy.
A. didn't see    B. haven't seen    C. wouldn't have seen    D. hadn't seen
36. Our monitor requested that ________.
A. all the class studied more carefully the problem
B. the problem was more carefully studied
C. with great care the problem could be studied
D. all the class study the problem more carefully
37. —— Would you have called her up had it been possible？
    Yes, but I ________ busy doing my homework.
A. was     B. were        C. had been      D. would be
38. His tired face suggested that he ________ really tired after the long walk.
A. had been    B. was    C. be    D. should be
39. It is important that we ________.
A. shall close the window before we leave
B. will close the window before we leave
C. must close the window before we leave
D. close the window before we leave
40. I didn't know his telephone number，otherwise I ______ him.
A. had telephoned     B. would telephone     C. would have telephoned     D. telephone

参考答案

1-5 BADAB  6-10 CDABC  11-15 CCDDB  16-20 ADAAC 
21-25 DCDAD  26-30 BDDAA  31-35 DABBD  36-40 DABDC