单项选择题

I''ve never seen the young man _________next to the director.

A．sits
B．sitting
C．sat
D．to sit
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单项选择题
He said, I_______ a lot of new words by the end of last year.
A．had already learnt
B．would have already learnt
C．have already learnt
D．already learnt
单项选择题
The villagers have offered much help to us and we think we should do something for them_________.
A．in return
B．in place
C．in fashion
D．in danger
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