单项选择题

He_______unwisely, but he was at least trying to do something helpful.

A．may have acted
B．must have acted
C．should act
D．would act
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单项选择题
His ideas are invariably condemned as_______by his colleagues.
A．imaginative
B．ingenious
C．impractical
D．theoretical
单项选择题
The investigators ______ for lunch.
A．process
B．excess
C．recess
D．access
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