◎ 题干

With everyone’s face_________behind the mask, it’s hard to tell who they really are.
A.having hidden B.being hidden C.hidden D.hiding
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“With everyone’s face_________behind the mask, it’s hard to tell who they really are.A.having hiddenB.being hiddenC.hiddenD.hiding…”主要考查了你对  【独立主格结构】  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。