◎ 题干
— When ______ you ______ to learn to skate?
— Five years ago.
[     ]
A. do, start
B. do, started
C. did, started
D. did, start
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“— When ______ you ______ to learn to skate? — Five years ago. [ ]A. do, startB. do, startedC. did, startedD. did, start…”主要考查了你对  【助动词的过去式】【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。