单项选择题

—Which of his parents is a doctor—______ are.

A． Any
B． Either
C． Both
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单项选择题
When I got there, I found everybody ______.
A． going
B． go
C． gone
单项选择题
The boy is so ill that we have to ______ a doctor.
A． send
B． send away
C． send for
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