◎ 题干
________ should not to be allowed to work at night.
A.Sixteen-year-oldsB.Sixteen-years-old
C.Sixteen year oldsD.Sixteen-years-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 to be allowed to work at night.A.Sixteen-year-oldsB.Sixteen-years-old C.Sixteen year oldsD.Sixteen-years-olds…”主要考查了你对  【专有名词】【名词所有格】【集合名词】【名词】  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。