◎ 题干
—Helen, where is your homework?
—Sorry, Miss Read. I _______ some of it last night. But I haven't finished doing it yet.

[     ]

A. do
B. did
C. have done
D. will do
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—Helen, where is your homework? —Sorry, Miss Read. I _______ some of it last night. But I haven't finished doing it yet. [ ]A. do B. did C. have done D.…”主要考查了你对  【一般过去时】  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。