单项选择题

A series of robberies ________ recently.

A．has been reported
B．has reported
C．have been reported
D．have reported
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单项选择题
Our country is trying to ________ the serious problems created by the environment pollution.
A．comply with
B．cope with
C．cope to
D．comply to
单项选择题
It was requested that all of the equipment ________ in the agreed time.
A．erected
B．would be erected
C．be erected
D．will be erected
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