The number of people present at the meeting ________ about 1000, a large number of whom ________ experts from abroad.
#86000
A
was; was
B
were; were
C
was; were
D
were; was
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Every possible means ______ to prevent the air pollution, but the sky is still not clear.
#85598
A
has been used
B
have been used
C
is used
D
are used
A library together with 5000 books for the school.
#86091
A
was provided
B
were provided
C
provided
D
have provided