34. _____ is known to everybody, the moon travels round the earth once every month.

　　　　 A.It　　　　　　　　　　　 B.As　　　　　　　　　　　　　 C.That　　　　　　　　　　　 D.What

33. 1 was really anxious about you. You _____ home　　　　　　　　　　　　　 without a word.

　 A. mustn't leave　　　　　　　　　　　　　　　　　　　　 B. Shouldn't have left

　 C. Couldn't have left　　　　　　　　　　　　　　　　　 D.needn't leave

32. Visitors ______ not to touch the exhibits.

　 A. will request B. request　　　　　　　　　　　　　　 C. are requesting　　　　 D. are requested

31. A computer can only do _____ you have instructed it to do.

　 A. how B. after　　　　　　　　　　　　　　　　　　　　　 C. what　　　　　　　　　　 D. when

30. I ______ ping-pong quite well, but I haven't had time to play since the new year.

　　　　 A. will play　　　　　　 B. have played　　　　　　 C. played　　　　　　　　　 D. play

29. The warmth of ______ sweater will of course be determined by the sort of _____ wool used.

　　　　 A. the; the　　　　　　　 B. the;不填　　　　　　　　 C. 不填;the　　　　　　　 D.不填；不填

28. It is generally believed that teaching is ______ it is a science.

A. an art much as B. much an art as　　　　　 C. as an art much as D. as much an art as

27. The home improvements have taken what little there is ______ my spare time.

　　　　 A. from　　　　　　　　　 B. in　　　　　　　　　　　　　 C. of　　　　　　　　　　　　 D. at

26. We didn't plan our art exhibition like that but it ______ very well.

　　　　 A. worked out　　　　 13. tried out　　　　　　　 C. went on　　　　　　　　 D. carried on

25. The Parkers bought a new house but _____ will need a lot of work before they can move in.

　　　　 A.they　　　　　　　　　　 B.it　　　　　　　　　　　　　　 C. one　　　　　　　　　　　 D. which