◎ 题干
— Each of the students, working hard at their lessons, ________ the book.
— So have I.
[     ]
A. is reading  
B. has read
C. reading  
D. reads
◎ 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“— Each of the students, working hard at their lessons, ________ the book.— So have I. [ ] A. is readingB. has readC. readingD. reads…”主要考查了你对  【现在完成时】【主谓一致】  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。