单项选择题

The police ran ______ all possible leads in the case.

A．in
B．up
C．against
D．down
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单项选择题
Supposing they did not come back, what ______ you do
A．will
B．can
C．would
D．may
单项选择题
______ a better life and achieve more successes! written in the letter was this encouraging wish.
A．You may live
B．You will live
C．May you live
D．I wish you live
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