单项选择题

In road rules the red light is a ______ for traffic to stop.

A．sign
B．sight
C．site
D．size
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单项选择题
Today Mrs Smith ______ herself in white like a nurse at the garden party.
A．wore
B．put
C．sent
D．dressed
单项选择题
When he entered the room he found a cat ______ quietly under the desk.
A．lie
B．lies
C．to lie
D．lying
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