单项选择题

It isn't quite ______ whether she will take the advice.

A．sure
B．right
C．certain
D．exact
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单项选择题
She won't be afraid as ______ as you are here.
A．long
B．well
C．soon
D．far
单项选择题
Shirley ______ a book about China last year but I don't know whether she has finished it.
A．has written
B．wrote
C．had written
D．was writing
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