单项选择题

It's time ______ about the noise pollution late at night.

A．something will be done
B．everything is done
C．something was done
D．everything will be done
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单项选择题
Very few scientists ______ completely new answers to the world's problems.
A．come up with
B．come out
C．come round
D．come up to
单项选择题
It's time for me to see ______ dinner.
A．out
B．over
C．about
D．off
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