单项选择题

Because of the high blood pressure, the doctor advised him to ______ from smoking.

A．constrain
B．restrain
C．refrain
D．remain
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单项选择题
The child ___________ at the twinkling star in wonder.
A．glanced
B．glared
C．gazed
D．watched
单项选择题
Is there _________ to eat It smells delicious.
A．a thing
B．anything
C．something
D．everything
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