单项选择题

The electric shaver needs （） before it can be used.

A．repairing
B．to repair
C．being repaired
D．to be repairing

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单项选择题
So little （） about physics that the lecture was completely beyond me.

A．I knew
B．did I know
C．I had known
D．had I known
单项选择题
It is （） for her to wear a formal suit at the homely little party.

A．out of order
B．out of question
C．out of place
D．out of practice
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