35. A clean environment can help the city bid for the Olympics, which ____ will promote its economic development.

A. in nature　　 B. in return　 C. in turn　 D. in fact

34. After he retired from office, Rogers ____ painting for a while, but soon lost interest.

A. took up　 B. saved up　 C. kept up　　 D. drew up

33.Police are now searching for a woman who is reported to ____ since the flood hit the area last Friday.

A. have been missing　 B. have got lost　 C. be missing　 D. get lost

32.I just wonder ____ that makes him so excited.

A. why it does　 B. what he does　 C. how it is　 D. what it is

31. How can you expect to learn anything ____ you never listen?

A. in case　 B. even if　 C. unless　 D. when

30. –May I smoke here ?

- If you ____, choose a seat in the smoking section.

A. should　 B.could　 C. may　 D. must