单项选择题


A．would
B．must lie
C．had to
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单项选择题
A．sleepingB．cryingC．moving
A．sleeping
B．crying
C．moving
单项选择题
Be careful. The traffic is busy now. It’s ______ dangerous ______ cross the street.
A．so, that
B．too, to
C．not, enough
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