◎ 题干
When I passed this afternoon, I saw a little boy was lying on the grass, his hands _____ under his head.
A.having crossedB.crossingC.crossedD.to cross
◎ 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“When I passed this afternoon, I saw a little boy was lying on the grass, his hands _____ under his head.A.having crossedB.crossingC.crossedD.to cross…”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。