35. You must ______ your papers before you hand them in.

A. go down　　　　　 B. go across　　　　 C. go out　　　　　　　 D. go through

34. Do you still remember the chicken farm ______ we visited three months ago?

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

33. I _____ him not to smoke, but he didn’t think it necessary.

　 A. persuaded　　　　　 B. advised　　　　 C. hoped　　　　　　　 D. suggested

32. Ladies and gentlemen, please fasten your seat belts. The plane _______.

　 A. takes off　　　　　 B. is taking off　　　 C. has taken off　　　　 D. took off

31. It was in the lab _____ was taken charge of by Prof. Zhang _____ they did the experiment.

　 A. where ; that　　　　 B. which; where　　 C. that; where　　　　 D. which; that

30. I failed in the final examination last term and only then _____ the importance of studies.

　 A. I realized　　　　 B. I had realized　　 C. had I realized　　　 D. did I realize