单项选择题

We must stress that these payment terms ( )very important to us.

A．be
B．being
C．been
D．are
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单项选择题
Is there any way of ensuring we'll have enough time( )our talks
A．in
B．on
C．with
D．for
单项选择题
We cannot proceed any further without ( )your thoughts with respect to the manner of payment.
A．receiving
B．receive
C．received
D．being received
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