题目内容
—What were you doing at 8:00 last Sunday?
—I _____ rubbish with my classmates by Zijiang River
A. picked up B. am picking up C. was picking up D. pick up
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题目内容
—What were you doing at 8:00 last Sunday?
—I _____ rubbish with my classmates by Zijiang River
A. picked up B. am picking up C. was picking up D. pick up