单项选择题

The answer ______ this question is known ______ us all.

A．to; by
B．of; to
C．of; of
D．to; to
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单项选择题
A．In order to sail upstream.B．In order to control the flood.C．In order to attract visitors.
A．In order to sail upstream.
B．In order to control the flood.
C．In order to attract visitors.
单项选择题
A．At about 9: 13.B．At about 9: 00.C．At about 9: 30.
A．At about 9: 13.
B．At about 9: 00.
C．At about 9: 30.
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