单项选择题

The police knew nothing about the case（）your father phone them.

A．after
B．since
C．as
D．until

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单项选择题
It was my father' s wish in his will that I（）become a doctor.

A．should
B．would
C．might
D．could
单项选择题
The teacher doesn' t permit（）in class.

A．smoke
B．smokes
C．to have a smoke
D．smoking
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