52. The news that we are going outing _______ a rush of excitement.

　 A. set out　　 B. set off　　 C. set about　　 D. set down

51. _______ you decided to take up, you should try to make it a success.

　 A. If only　　 B. Unless　　 C. Whenever　　 D. Whatever

50. The time is not far away _______ modern communications will become widespread in China’s vast countryside.

　 A. as　　　　 B. when　　　 C. until　　 D. before

49. I have always been honest and straightforward, and it doesn’t matter ______ that I’m talking to.

　 A. who is it　　 B. who it is　　 C. it is who　　 D. it is whom

48. After Yang Liwei succeeded in circling the earth, ______ our astronauts desire to do is walk in space.

　 A. where　　 B. what 　　C. that　　 D. how

47. What surprised me was not what he said but _______ he said it.

　 A. the way　 B. in the way that　 C. in the way　 D. the way which

46. I think Father would like to know _______ I’ve been up so far, so I decided to send him a quick note.

　 A. which　　　 B. why　　 C. what　　 D. how

45. ______ is often the case, we have worked out the production plan.

　 A. Which　　　 B. When　　　 C. What　　 D. As

44. All finished, we sat down to enjoy____ we thought the most delicious dinner.

A. that　　 B. which　　　 C. what　　　 D. it

43. ---Look at what you are doing!

　 ---Ah, I wonder _____ this boot won’t fit me. I’ve been trying to put it on the wrong foot.

A. how　　　 B. if　　　　 C. why　　　 D. that