The meeting _________ next week is sure to be a great success.
#91279
A
to hold
B
to be hold
C
to have held
D
being held
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Much attention should be paid _________people’s living conditions.
#95777
A
in improving
B
to improve
C
improving
D
to improving
—Why does the lake smell terrible? —Because large quantities of water _____.
#93664
A
have polluted.
B
is being polluted.
C
has been polluted.
D
have been polluted.