◎ 题干
___________ should not be allowed to go out at night.
A.Twelve-years -oldB.Twelve-year-olds
C.Twelve years oldD.Twelve year olds
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ ___________ should not be allowed to go out at night.A.Twelve-years -oldB.Twelve-year-oldsC.Twelve years oldD.Twelve year olds…”主要考查了你对  【基数词】【序数词】【时刻】【分数】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。