【单选题】【消耗次数：1】
_____ for the fact that she broke her leg, she might have passed the exam.
①
Had it not been
②
Hadnt itbeen
③
Was it not
④
Were it not
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29. _______ for the fact that she broke her leg, she might have passed the exam.
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Had it not been
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have stolen
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have stolen
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allowance
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①
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