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
If you have really been studying English for so long, it' s about time you __ able to write letters in English.
A．should be
B．were
C．must be
D．are
单项选择题
Indeed, almost every scientist now finds it is impossible to read all the works relevant to his own subject,______. extensively outside of it.
A．much more to read
B．much less to read
C．much less reading
D．still more reading
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