45. ______ hiking, you should always think about your safety and wear good clothes.

A. As with　 　　　　 B. As to　　 　　　　　 C. As for　 　　　　　 D. As in

44. - How much are these bananas ________?

　　 - Five yuan.

　　 - Oh, it’s not expensive ______.

　 A. at all; at all 　　　　 B. in all; in all　 　　 C. in all; at all　 　　 D. at all; in all

43. He always goes to school on time _________ it rains.

　 A. except　　　 　　 B. except for　　　 C. except that　　 　　　 　　　 D. except when

42. During the 2008 Olympic Games, all the tourists have ______ in Beijing.

A. a fun　 　　　　　　 B. fun　　 　　　　　　 C. funny　 　　　　　　　　 D. funs　

41. The little boy left home with the light ______ and the door_______.

A. burning; shut　　 B. burnt; shutting　 C. being on; shut　　 D. on; shutting　

40. There is a poisonous chemical in milk. Have you considered _______ it?

　 A. to change　 　　　　 B. changed　 　　　　　　　 　C. changing　　 　　　　 D. being changed

39. Do not start a book unless you can see from the first few pages that it is ______ you can easily read and understand.

　 A. that　　　 　　　　　 B. one　　　 　　　　 　C. the one　　 　　　　　　 D. a one

38. The girl was last seen playing _______ guitar by ______ lake.

　 A. the; /　　　　　　　　　　 B. /; the　 　　　　　　 　C. the; the　　　　　　　　　 D. /; /

37. E-mail, as well as telephones, ______ an important part in daily communication.

　 A. is playing 　　　　　 B. have played　　 C. are playing　　　 　　 D. play

36. I was about to start _________ it began to rain.

　 A. while　 　　　　　　　 B. when　 　　　　　 　C. as　 　　　　　　　　　　 D. however