单项选择题

The noise was caused by a dog______ mouse through the back door.

A．catching
B．fighting
C．following
D．chasing
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单项选择题
You look very well after your holiday; you have______weight.
A．put on
B．put up with
C．put away
D．put out
单项选择题
Do you know the people______live over the road
A．whom
B．who
C．what
D．whose
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