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