He now regrets______harder when he was at school.
A. not to study
B. not studying
C. having not studied
D. not to be studying
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The television show was______by a special news report.
A. cut off
B. cut down
C. cut in
D. cut across
I can feel______when Im in my friends house.
A. at random
B. at ease
C. at large
D. at length
The new suspension bridge______by the end of next month.
A. will finish
B. have finished
C. must have finished
D. will have been finished
In the long history of natural evolution,many kinds of animals have______from the earth.
A. withdrawn
B. vanished
C. found
D. hung
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