-Has Sam finished his homework today, Anne?-I have no idea. But he ________ it this morning.[ ]A．didB．had doneC．was doingD．had done-高中英语-n多题

◎ 题干

-Has Sam finished his homework today, Anne?
-I have no idea. But he ________ it this morning.

[ ]

A．did
B．had done
C．was doing
D．had done

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◎ 解析

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◎ 知识点

根据n多题专家分析，试题“-Has Sam finished his homework today, Anne?-I have no idea. But he ________ it this morning.[ ]A．didB．had doneC．was doingD．had done…”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。

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