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
Miss Li is our teacher, and she teaches ______ English.
A．my
B．our
C．us
单项选择题
They may ______ next Sunday.
A．to skate
B．go skating
C．skating
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