单项选择题

There is no need （）. He won't show up.

A. to wait
B. wait
C. waited
D. waiting

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单项选择题
She decided to take a second course since she （）the first one.

A. has completed
B. is completing
C. had completed
D. will complete
单项选择题
— Don't touch the papers. —Certainly. I'll （）the papers be touched.

A. not make
B. not do
C. not let
D. not allow
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