单项选择题

We should be quick ______ he has climbed up the top of the mountain.

A．that
B．in which
C．which
D．in that
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单项选择题
Mary has ______ his wedding until September.
A．put up
B．put forward
C．put out
D．put off
单项选择题
______ the difficulties associated with the experiment, we'll go over it.
A．Given
B．In spite of
C．Thanks to
D．Because of
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