问题描述:
-Have you finished your homework,Lucy?- No,I ____my mother in the kitchen all day yesterday
答案上说是一整天干的事,用过去进行时.还是有点不太懂,
答案是was helping
答案上说是一整天干的事,用过去进行时.还是有点不太懂,
答案是was helping
问题解答:
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