◎ 题干
I cleaned my classroom ______.
[     ]
A. with three hours
B. three hours ago
C. in three hours
D. three hours before
◎ 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“I cleaned my classroom ______. [ ]A. with three hours B. three hours ago C. in three hours D. three hours before …”主要考查了你对  【时间副词】【一般过去时】  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。