31. What we are doing _______ good to the people.

　　A. are B. have been C. is D. be

　　32. John is _______ of the two students.

　　A. cleverer B. the clever C. the cleverer D. the cleverest

　　33. He used to be a heavy smoker， _______?

　　A. used he B. didn‘t he C. doesn’t he D. wouldn‘t he

　　34. Rather than _______， he ran all the way home.

　　A. walk B. walked C. walking D. to walk

　　35. Get to the top of hill， ______ you can see the whole city.

　　A. or B. but C. and D. so

　　36. What you said sounds right. I‘m considering _______ this job.

　　A. accepting B. accept C. to accept D. will accept

　　37. _______ I came into the office， the teachers were having a meeting.

　　A. While B. When C. Once D. Since

　　38. Half of those books _______ best-sellers.

　　A. is B. are C. am D. was

　　39. _______ Chicago is a beautiful city today， but _______ Chicago of the 1920s was a very dirty place.

　　A. The…the B. /…/ C. A…the D. /…the

　　40. ______ he is， Tom knows a lot of things.

　　A. Child as B. Clever as C. Fool although D. A boy as

　　41. Is that the reason _______ you are in favor of the proposal?

　　A. what B. of which C. why D. for

　　42. The train will _______ Beijing at about half past seven.

　　A. arrive B. get C. reach D. reach to

　　43. Nearly everybody _______ colds in winter.

　　A. suffer from B. suffers in C. suffers from D. suffer for

　　44. ______ that your son is well again， you no longer have anything to worry about.

　　A. When B. After C. Before D. Now

　　45. We never dared to ask him a question， _______?

　　A. did we B. didn‘t we C. dared we D. daredn’t we

　　46. You seldom have to do the cooking， ________?

　　A. have you B. haven‘t you C. do you D. don’t you

　　47. _______ no exercise-book， he had to write on a piece of paper.

　　A. There was B. There is C. There being D. There having

　　48.—Where _______ the camera? I can‘t see it anywhere.

　　—I _______ it right here. But now it‘s gone.

　　A. did you put…put B. have you put…have put

　　C. had you put…was putting D. had you put…have put

　　49. In another year or so， you ______ all about it.

　　A. would forget B. forget C. have forgotten D. will have forgotten

　　50.—If that‘s not yours， _______?

　　—Probably John‘s.

　　A. whose else can it be B. whose else‘s can it be

　　C. who‘s else can it be D. who else can it be