单项选择题

The firemen acted quickly because the lives in the building were ______.

A．at random
B．in stock
C．on diet
D．at stake
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单项选择题
Don't let ______ of any chance!
A．to go
B．going
C．go
D．gone
单项选择题
Let's go and get some water, ______
A．can't we
B．won't we
C．shall we
D．shan't we
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