◎ 题干
The room is very clean because it ______ by us.
[     ]
A. was kept
B. is clean
C. is cleaned
D. will be swept
◎ 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“The room is very clean because it ______ by us.[ ]A. was keptB. is cleanC. is cleanedD. will be swept…”主要考查了你对  【被动语态】【一般现在时】  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。