—How clean the room is! —Yes，I am sure that someone _______ it.A．cleansB．cleanedC．has cleanedD．had cleaned-初中英语-n多题

◎ 题干

—How clean the room is! —Yes，I am sure that someone _______ it.

A．cleans	B．cleaned
C．has cleaned	D．had cleaned

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“—How clean the room is! —Yes，I am sure that someone _______ it.A．cleansB．cleanedC．has cleanedD．had 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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