单项选择题

Look! The children are ______ kites over there.

A． flew
B． fly
C． flying
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单项选择题
Let's go for a walk, ______
A． will we
B． shall we
C． do we
单项选择题
Dr. Caron told me to take the medicine ______ a day.
A． two
B． two times
C． twice
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