45.一Is the girl ______is interviewing the manager of that company your friend?

　 一Yes，she is a journalist from CCTV.

　　 A. whom　　　　　 B. which　　　　　　 C. who　　　　　　 D, whose

44. Don't be afraid of asking for information ______it is needed.

　　 A. when　　　　　　 B. after　　　　　　　 C. although　　　　 D. unless

43. I want to know ______do to help my neighbour.

　　 A. what I can　 　　　B. what can I　　　　 C. how I can　　　 D. how can I

42. It's important ______the piano well.

　　 A. of him to play　　　 B. for him to play　　 C. of him playing　 D. for him playing

41. This kind of food _____ cool, clean and dry according to the instruction.

　　 A. should be carried　 B. must be put　　 C. should be placed　 D. must be kept

40.一Have you mended your shoes，Bob?

　 一Yes，I ______them twenty minutes ago.

　　 A. have mended　 B. mend　　　　　 C. had mended　 D, mended