单项选择题

Would it be too much to ask you ( )to my question by tomorrow

A．respond
B．to respond
C．responding
D．responded
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单项选择题
( ) is a major port of Italy.
A．Gdynia
B．Genoa
C．Port Said
D．Helsinki
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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