单项选择题

______what to do,the man telephoned the police．

A．Not known
B．Not knowing
C．Don't know
D．Knowing not
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单项选择题
All the ideas______into realities in the near future．
A．will be turned
B．will turn
C．would be turning
D．is turning
单项选择题
It is high time you______your membership dues．
A．paid
B．pay
C．will pay
D．to pay
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