The number of people present at the meeting _________ about 1000 , a large number of whom _______ experts from abroad.
#85827
A
was; was
B
were; were
C
was ; were
D
were; was
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A survey of the opinions of experts ________ that three hours of outdoor exercise a week ________ good for one’s health.
#85979
A
show; are
B
shows; is
C
show; is
D
shows; are
Professor Smith, along with his assistants,______ on the project day and night to meet the deadline.
#86316
A
work
B
working
C
is working
D
are working
Every possible means ______ to prevent the air pollution, but the sky is still not clear.
#86302
A
is used
B
are used
C
has been used
D
have been used