单项选择题

My brother ______ the army for three years.

A．has been in
B．had entered
C．has joined
D．joined
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单项选择题
Hardly ______ out of the office when it started to rain.
A．did we get
B．we got
C．have we got
D．had we got
单项选择题
We'll get in all the wheat before the sun ______.
A．will set
B．was set
C．set
D．sets
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