单项选择题

This machine needs（）; you'd better have it done tomorrow.

A、 to repair
B 、repairing
C、 being repaired
D、 repair

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单项选择题
（）English, he asked me to join the negotiation with the foreign investors.

A、 Not to know
B 、Not to have known
C、 Not knowing
D、 Not having knowing
单项选择题
All our preparations went（）because the exam was cancelled.

A、 for all
B 、for everything
C、 for anything
D、 for nothing
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