40. The old worker has been fired and now a young man ________.

　 A. took place　　　 B. has taken the place　 C. has taken place of him　 D. has taken his place

39. It remains ____ whether Jim’ll be fit enough to play in the finals.

　 A. seen　　　　　 B. to be seen　　　　 C. seeing　　　　　 D. to see

38. Excuse me, ________ can you tell me how to get to the nearest post office?

　 A. thus　　　　　　 B. but　　　　　　 C. or　　　　　　 D. so

37. The missing boys were last seen _______ near the river.

　 A. playing　　　　 B. to be playing　　　 C. play　　　　　 D. to play

36. The computer system _______ suddenly while he was searching for information on the Internet.

　 A. broke down　　　 B. broke out　　　　 C. broke up　　　 D. broke in