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题型:单选题 题类:模拟题 难易度:普通

江苏省南京市六校联合体2020届高三下学期英语5月联考试卷(含听力音频)

________ the mistake in the beginning, the problem could have been prevented at its source.
A、Had not the company ignored B、If the company didn't ignore C、Had the company not ignored D、Would the company not ignore
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