单项选择题

Nobody but Tom and Lucy ______ the fact.

A．knows
B．know
C．is known
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单项选择题
The boy is so ill that we have to ______ a doctor.
A．send
B．send away
C．send for
单项选择题
When will you go to have your hair ______
A．cut
B．cutting
C．to cut
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