◎ 题干
You must keep your eyes _______ while the eraser is passing.
[     ]
A. close
B. closed
C. closing
D. to close
◎ 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“You must keep your eyes _______ while the eraser is passing. [ ]A. closeB. closed C. closing D. to close …”主要考查了你对  【形容词】  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。