单项选择题

Hurry up ! The play ______ for ten minutes.

A． has begun
B． had begun
C． has been on
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单项选择题
I don't know ______ he still lives here.
A． where
B． what
C． whether
单项选择题
______ of us has read the story, so we know nothing about it.
A． Some
B． Both
C． None
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