单项选择题

Although Helen is a new teacher, she knows ______ student in her class.

A．every of
B．every
C．all
D．all of
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单项选择题
Since last year, she______ of the long distance.
A．have covered three fifth
B．have covered three fifths
C．has covered three fifths
D．has covered three fifth
单项选择题
______his address, I can' t send this book to him.
A．Not knowing
B．Knowing
C．Not know
D．Not known
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