◎ 题干
While I _______ TV, the bell rang.
[     ]
A. watch
B. watched
C. am watching
D. was watching
◎ 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“While I _______ TV, the bell rang. [ ]A. watch B. watched C. am watching D. was watching …”主要考查了你对  【过去进行时】  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。