单项选择题

If you can ______ punctual delivery, we shall place large orders with you.

A．guarantee
B．convince
C．assure
D．ensure
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单项选择题
The airport VIP lobby provides special chairs with TV sets ______ to them.
A．lodged
B．attributed
C．attached
D．attended
单项选择题
There is a(n) ______ that I'll be elected as the chairman of the student union.
A．chance
B．opportunity
C．case
D．occasion
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