单项选择题

I don't know ______ he still lives here.

A． where
B． what
C． whether
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单项选择题
______ of us has read the story, so we know nothing about it.
A． Some
B． Both
C． None
单项选择题
Let the children go away. They're making too much ______ here.
A． noise
B． voice
C． noisy
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