35. With new technology, pictures of underwater valleys can be taken 　　　color.

A. by　　　　　　　 B. for　　　　　　　 C. with　　　　　 D. in

34.The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase　　　　　　 .

A. then　　　　 B. those　　　　　　 C. it　　　　　　　 D. that

33. Sit down, Emma. You will only make yourself more tired, 　　　on you feet.

A. to keep　　　　　 B. keeping　　　　　　 C. having kept　　　　　 D. to have kept

32. -Bob has gone to California.

-Oh, can you tell me when he 　　　　?

A. has left　　 B. left　　 C. is leaving　 D. would leave

31. The shocking news made me realize　　　 　terrible problems we would face.

A. what　　 B. how　　 C. that　 D. why

30. Maybe if I 　　　science, and not literature then, I would be able to give you more help.

A. studied　　 B. would study　 C. had studied　　 D. was studying

29. 　　　volleyball is her main focus, she’s also great at basketball.

A. Since　 　B. Once　　 C. Unless　　 D. While

28. -Where are the children? The dinner’s going to be completely ruined.

-I wish they 　　　　always late.

A. weren’t　　 B. hadn’t been　 C. wouldn’t be　　 D. wouldn’t have been