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the problem, he wouldn't have committed those mistakes.A.If he understoodB.Had h

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the problem, he wouldn't have committed those mistakes.A.If he understoodB.Had h

________the problem, he wouldn't have committed those mistakes.

A.If he understood

B.Had he understood

C.When he had understood

D.If he would understood

试题答案

B

标签：committedhavemistakesthoseproblem

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