单项选择题

If I（）out of my ink, I would have finished writing the composition.

A．didn't run
B．shouldn't have run
C．haven't run
D．hadn't run

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单项选择题
She had three daughters, all（）became nurses.

A．of which
B．of whom
C．which
D．who
单项选择题
Rarely（）by so many students.

A．so much time has been wasted
B．has so much time wasted
C．has so much time been wasted
D．has wasted so much time
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