单项选择题

He set up in business ______ his own and was very successful.

A．in
B．of
C．on
D．by
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单项选择题
The police got some ______ information about their plans.
A．inner
B．inside
C．inward
D．interior
单项选择题
The mere fact ______ most people believe nuclear war would be madness does not mean that it will not occur.
A．what
B．which
C．that
D．why
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