6.Such poets as Shakespeare ________ widely read, of whose works, however, some _____ difficult to understand.
A. are; are
B. is; is
C. are; is
D. is; are
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7.At present, one of the arguments in favor of the new airport _______ that it will bring a lot of jobs to the area.
A. is
B. are
C. will be
D. were
8.Professor James will give us a lecture on the western culture, but when and where ______ yet.
A. hasn't been decided
B. haven't decided
C. isn't being decided
D. aren't decided
9.A survey of the opinions of experts ______ that three hours of outdoor exercise a week _______ good for one's health.
A. show; are
B. shows; are
C. show; is
D. shows; is
10.Nowadays, the number of people who _____ hungry _______ been greatly reduced.
A. goes; have
B. goes; has
C. go; has
D. go; have