—Why is the classroom so dirty?—Sorry，sir. Ityesterday, We forgot to do it.A．doesn’t cleanB．didn’t cleanC．isn’t cleanedD．wasn’t cleaned-初中英语-n多题

◎ 题干

—Why is the classroom so dirty?
—Sorry，sir. It yesterday, We forgot to do it.

A．doesn’t clean	B．didn’t clean
C．isn’t cleaned	D．wasn’t cleaned

◎ 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“—Why is the classroom so dirty?—Sorry，sir. Ityesterday, We forgot to do it.A．doesn’t cleanB．didn’t cleanC．isn’t cleanedD．wasn’t cleaned…”主要考查了你对【一般现在时】，【过去进行时】，【过去完成进行时】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。

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