49. _______ time I saw her, I mistook her for her sister.

　　 A. The first　　　 B. At the fm　　　 C. For the first　　 D. In the fm

48. They have _______ common language, because they ____ nothing _____ common.

　　 A. no, are, in　　 B. not a, have, on C. a, have, in　　 D. no, have, in

47. We were kept ________ for quite some time.

　　 A. to wait　　　　 B. waiting　　　　 C. waited　　　　　 D. wait

46. I caught Ann ________ my diary.

　　 A. read　　　　　 B. see　　　　　　 C. seeing　　　　　 D. reading

45. The ______ boy was last seen _____ near the East Lake.　

　　 A. missing; playing B. missing; play C. missed; played　 D. missed; to play

44. When I got back home I saw a message pinned to the door____ , "Sorry to

　　 miss you; will call later. "

　　 A. read　　　　　 B. reads　　　　　 C. to read　　　　　 D. reading

43. This means that an object _____ 120 kg on the earth will only weigh 20 kg on the moon.

　　 A. being weighed　 B. weighed　　　　 C. weighs　　　　　 D. weighing

42. We can drink _______ water but not ______ water.

　　 A. boiled; boiled B. boiled; boiling C. boiling; boiling D. boiling; boiled

41. Are all Chinese textbooks _____ in your _____ house?

　　 A. publishing; publishing　　　　　 B. published; published

　　 C. publishing; published　　　　　　 D. published; publishing

40. I found the door _______ when I got home.

　　 A. opened　　　　 B. closed　　　　　 C. to open　　　　　 D. to close