单项选择题

I'm not sure ______ or not

A．if he will come
B．whether he will come
C．whether will he come
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单项选择题
Yesterday we ______ school until seven o' clock.
A．got to
B．didn't reach (到达，伸出)
C．arrived in
单项选择题
I've never seen ______ beautiful girl.
A．so a
B．such a
C．a such
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