问题描述:
____should not be alowed to go out at night.
A.Twelve-years old B.Twelve-year-olds C.Twelve year old D.Twelve years olds
选什么 为什么?
A.Twelve-years old B.Twelve-year-olds C.Twelve year old D.Twelve years olds
选什么 为什么?
问题解答:
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