赞题库-背景图

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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热门试题

单项选择题It is high time you______your membership dues．

A．paid
B．pay
C．will pay
D．to pay

单项选择题I missed the morning train because I slept______．

A．over
B．of
C．in
D．through