单项选择题

In the United States, a primary election is a method ______ voters select the nominees (被提名的候选人) for public office.

A．that
B．by which
C．is that
D．by those
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单项选择题
Visitors have ______ to the City Hall during the vocation.
A．admission
B．allowance
C．approval
D．access
单项选择题
We are ______ to prepare for the World Women's Conference.
A．set off
B．set up
C．set out
D．set aside
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