单项选择题

A．They are professional storytellers.
B．They are the parents of young children.
C．The stories will help them improve their vocabulary.
D．The stories are required for a course.
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单项选择题
A．We are short of paper.B．The printing is not important.C．We should save paper.D．We have to pay for the paper.
A．We are short of paper.
B．The printing is not important.
C．We should save paper.
D．We have to pay for the paper.
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