问题
选择题
We had an anxious couple of weeks _____ for the results of the experiment.
A．wait
B．to be waiting
C．waited
D．waiting
答案
D
由于是主语等待，表主动，且在题干中充当方式状语。动词不定式不做方式状语。
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We had an anxious couple of weeks _____ for the results of the experiment.
A．wait
B．to be waiting
C．waited
D．waiting
D
由于是主语等待，表主动，且在题干中充当方式状语。动词不定式不做方式状语。