单项选择题

Can you wait a minute I'm busy ______ my homework.

A．finish
B．to finish
C．finishing
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单项选择题
It's time for bed, please ______ your shoes and clothes, Tom.
A．put on
B．take in
C．take off
单项选择题
It's a fine day, why ______ go out for a picnic
A．don't
B．doesn't
C．not
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