单项选择题

He was told he could join the army when he ______ old enough.

A．would be
B．should be
C．was
D．were
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单项选择题
After talking to the old woman for a while, her fear and timidity ______.
A．went away
B．stopped
C．disappeared
D．left behind
单项选择题
Don't smoke in the meeting-room, ______
A．do you
B．will you
C．can you
D．could you
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