题目内容
---Lucy, what were you doing at nine last night?
---I ___________ the piano. I usually practice the piano at that time.
A. play B. played
C. was playing D. am playing
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题目内容
---Lucy, what were you doing at nine last night?
---I ___________ the piano. I usually practice the piano at that time.
A. play B. played
C. was playing D. am playing