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27. —That must have been a long trip.
—Yeah, it _________ us a whole week yet there.
A. takes B. had taken C. took D. was taking
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 he D. wouldn't have been
29. _______ volleyball is her main focus, she's also great at basketball.
A. Since B. Once C. Unless D. While
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
31. The shocking news made me realize _________ terrible problems we would face.
A. what B. how C. that D. why
32. — Bob has gone to California.
— Oh, can you tell me when he ________?
A. had left B. left C. is leaving D. would leave
33. Sit down. Emma. You will only make yourself more tired, ________ on your feet.
A. to keep B. keeping C. having kept D. to have kept
34. The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase __________.
A. them B. those C. it D. that
35. With new technology, pictures of underwater valleys can be taken _________ color.
A. by B. for C. with D. In
