The class _________ shown us some wonders.
A. has
B. is having
C. haven
D. have
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By the end of this year, I _________ English for ten years.
A. am studying
B. study
C. have studied
D. studied
Neither the clerks nor the manager _________ the work by Friday.
A. has finished
B. have finished
C. finish
D. will finish
Blue light from the sun _________ scattered in every way.
A. being
B. were
C. are
D. is
中国水资源总量和人均占有量都比较丰富
A. 对
B. 错
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