单项选择题

The time has come______ we can make extensive use of nuclear energy.

A．as
B．while
C．when
D．since'
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单项选择题
His understanding made a deep impression ______ the young girl.
A．in
B．on
C．for
D．to
单项选择题
Do you mind______ her______ to do next
A．my telling; what
B．me telling; how
C．me telling; when
D．mine telling; what
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