We must know what we should do and what we should avoid ______a good impression

题干

We must know what we should do and what we should avoid ______a good impression on others in public place.

A．to leave

B．leaving

C．to have left

D．leave

上一题下一题 0.85难度单项选择更新时间:2010-07-02 07:57:09

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