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
They are trying to ______ the forest to its original pristine condition.
A．revive
B．restore
C．renew
D．refresh
单项选择题
He had gone ______ many trials and ordeals before he became a great leader of the country,
A．by
B．into
C．over
D．through
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