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…h(huán)ave put

　　C. had you put…was putting D. had you put…h(huán)ave 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