【单选题】【消耗次数：1】
She ___ the door before she goes away.
①
had locked
②
is locking
③
has locked
④
was locking
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相关题目
【单选题】
She ________ the door before she goes away.
①
had locked
②
is locking
③
has locked
④
was locking
【单选题】
She_______ the door before she goes away.
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had locked
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is locking
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has locked
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was locking
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随机题目
【单选题】
在机械加工工艺过程中安排零件表面加工顺序时，要“基准先行”的目的是（）
①
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