单项选择题

I'm not leaving ______ I get an apology from you.

A．so that
B．as long as
C．while
D．until
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单项选择题
I need ______ to finish the chair.
A．one more wood
B．much woods
C．many woods
D．a piece of wood
单项选择题
Mary was astonished that she ______ for the counselor's position,
A．turned on
B．was turned down
C．turned off
D．was turned back
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