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
The movie star ______ with your sister, didn't he
A．used to dance
B．used to dancing
C．was used to dance
D．was used to dancing
单项选择题
I'm sorry to have spent so much money. I wish you ______ so.
A．hadn't done
B．didn't do
C．haven't done
D．won't done
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