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
They may ______ next Sunday.
A． to skate
B． go skating
C． skating
单项选择题
Well, ______ this medicine, three ______ a day.
A． take; time
B． take; times
C． eat; time
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