单项选择题

It's time he ______ something for his coming examination.

A．do
B．does
C．did
D．will do
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单项选择题
I'm sure he understands ______ you feel. He's very clever.
A．when
B．what
C．whether
D．how
单项选择题
Susan wants to know whether the measures have been agreed ______.
A．to
B．with
C．over
D．on
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