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    精英家教网 > 小学英语 > 题目详情
    —What _________ to the young tree yesterday?
    —Its leaves falled.

    A. happen
    B. happens
    C. happened
    D. happening
    C
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    科目：小学英语 来源：期末题 题型：单选题

    — What _____________ to the young tree yesterday?
    — Its leaves falled.
    [     ]
    A. happen
    B. happens
    C. happened
    D. happening

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