41. It was _______ who helped Tom out when he was in trouble.

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　　A. I B. me C. us D. ours 本文来自Kaixin100

　　42. The leaves of many trees turn ______ in autumn. Kaixin100网络，Kaixin100

　　A. to red D. red C. to be red D. into red

　　43.—Will you go to the museum tomorrow?

　　—Yes, I will go _______ it’s windy.

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　　A. since B. as though C. if D. even though

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　　44. Mary used to stay up until far into the night, ______? Kaixin100内容管理系统

　　A. didn’t she B. usedn’t she C. does she D. Both A& B.

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　　45. It is very kind ______ you to supply us _______ so much information. Kaixin100网络，Kaixin100

　　A. for…with B. for…in C. of…with D. of…in

　　46. Five minutes earlier, _______ we could have caught the last train.

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　　A. of B. but C. and D. so

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　　47. Many a boy and many a girl _______ it since then.

　　A. have seen B. has seen C. has been seeing D. had seen

　　48. I regretted _______ the days when I _______ hard at school. Kaixin100内容管理系统

　　A. wasting…must have worked B. having wasted…should have worked Kaixin100网络，Kaixin100

　　C. to waste…could work D. to have wasted…would work 内容来自kaixin100

　　49. He’s sure you’ll pass the examination, _______?

　　A. isn’t he B. do you C. won’t you D. hasn’t he 内容来自kaixin100

　　50. With ______, the man had to go out of his hiding place. 本文来自Kaixin100

　　A. his food ran out B. his food running out 本文来自Kaixin100

　　C. him running out D. his food run out

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