单项选择题

We don't doubt ______ he can do a good job.

A．whether
B．that
C．how
D．why
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单项选择题
it was on the National Day ______ she met with her separated sister.
A．that
B．where
C．when
D．which
单项选择题
I've finally finished my paper and it ______ me an entire month.
A．takes
B．took
C．was taken
D．had taken
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