单项选择题

All the arrangements should have been completed prior______ our departure.

A．in
B．to
C．by
D．before
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单项选择题
The writer has published many books, ______are well received by the readers.
A．none of whom
B．all of which
C．neither of who
D．one of which
单项选择题
Peter, whom everyone suspected,______ to be innocent.
A．turned out
B．turned off
C．turned up
D．turned over
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