问题
选择题
—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
答案
答案：C
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—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：C