21. We could have bought a new car last year ,but we really____ it.

　　A. can't afford B. couldn't afford C. won't afford D. unable to afford

　　22. If you don't pay your taxes ,they______.

　　A. have you arrested B. will have you arrested C. must have you arrested D. have you arrest

　　23. I _______meeting you ever since we parted.

　　A. was looking forward to B. have been looking forward to

　　C. had been looking forward to D. looked forward to

　　24. Mary ____in the garden when it began to rain.

　　A. was walking B .walked C. walking D. had walked

　　25.Where have you been? What _____ ?

　　A. did you do B. have you been doing C. have made D. were you doing

　　26.The boy couldn’t go to sleep because he _____ too long.

　　A. was talking B. talked C. would talk D. had been talking

　　27. She has been studying here for five years and by the end of next summer she _____.

　　A. will graduate B. will be graduating C. will be graduated D. will have graduated

　　28. By the end of 1976, we _____ the demand for petroleum.

　　A. met B. have met C. had met D. had been meeting

　　29. When you come tonight at eight o’clock, I _____ eight lessons.

　　A. would review B. shall review C. shall have reviewed D. shall be reviewing

　　30. Make sure that the doors _____ before you go out.

　　A. locked B. are loked C. will locked D. lock

　　31. The instructor had gone over the problems many times before the students _____the final examination.

　　A. will take B. took C. take D. would take

　　32. The sports meeting _____ in October,1989.

　　A. was held B. would be held C. has been held D. were held

　　33. The tickets _____ when I got there.

　　A. were selling out B. had been sold out C. have been sold out D. were held

　　34. Apples _____ to be sweeter than oranges.

　　A. are said B. are being said C. is being said D. were said

　　35. Mr.Smith _____ to Europe on a special mission.

　　A. had been sending B. were sent C. is being sent D. was sending

　　36. When water is heated, it _____ into vapour.

　　A. is changed B. is changing C. will be changed D. will change

　　37. She _____ for what she had done.

　　A. was criticized B. is criticized C. is criticizing D. is being criticized

　　38. We _____ as soon as we got there.

　　A. were warmly welcome B. were warmly welcomed C. would be welcome D. are welcomed

　　39. “Are Alice and Tom still living in New York?”

　　“No, they _____ to Dallas.”

　　A. are just moved B. have just moved C. had just moved D. will just move

　　40. I haven’t heard from Maria_____.

　　A. since a long time B. for many months ago C. for many months D. since many months before