35．We have been out of touch with each other for many years, and I find it difficult to keep ________ of my old friend now.

　　 A. track　　　　　 B. eye　　　　　　 C. faith　　 　　　　D. mind

34. We haven’t settled the problem of ______ it is necessary for him to study abroad.

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

33. _______Environmental damage is done, it takes many years for the ecosystem to recover.

　　 A. Even if　　　　 B. If only　　　　 C. While　　　　　 D. Once

32. The owner of the cinema needed to make a list of improvements and employ more people to keep it running, _________ meant spending tens of thousands pounds.

　　 A. who　　　　　 B. that　　　　　　 C. as　　　　　　 D. which

31. The children were not _______ for the accident.

　　 A. blamed　　　 　B. to be blamed　　 C. being blamed　　 D. to blame

30. By _______ his better nature, we persuaded him to change his mind.

　　 A. appealing to　　　　　　　　　　 B. taking advantage of

　　 C. making use of　　　　　　　　　　 D. accounting for