◎ 题干
Mary often stays up, reviewing her lessons, books _____ all over the desk.

[     ]

A. spreading
B. spread
C. are spreading
D. to spread
◎ 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“Mary often stays up, reviewing her lessons, books _____all over the desk. [ ]A. spreading B. spread C. are spreading D. to spread …”主要考查了你对  【过去分词】【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。