◎ 题干
—What were you doing at 9 o'clock last Saturday morning?
—I ______in my bed.

[     ]

A. am sleeping
B. was sleep
C. was sleeping
D. sleep
◎ 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“—What were you doing at 9 o'clock last Saturday morning?—I ______in my bed. [ ]A. am sleeping B. was sleep C. was sleeping D. sleep …”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。