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    精英家教网 > 小学英语 > 题目详情
    How can the water __________ vapour?

    A. became
    B. become
    C. becoming
    B
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    科目：小学英语 来源：同步题 题型：单选题

    How can the water ____________ vapour?
    [     ]
    A. became
    B. become
    C. becoming

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