◎ 题干
用所给单词的适当形式填空。   
1. Tom______(swim) for two hours in the river.
2. When______you______(buy) the new computer?
3. When I entered the classroom, I found some students______(watch) TV.
4. There are some children who______(play) football on the playground.
5. —How long______ you______ (do) that?
    —For about five years.
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“用所给单词的适当形式填空。 1. Tom______(swim) for two hours in the river.2. When______you______(buy) the new computer?3. When I entered the classroom, I fou…”主要考查了你对  【分词】【一般过去时】【现在进行时】【现在完成进行时】  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。