Choose the sentence which has the same meaning as the given one.He didn’t revise all his lessons, he failed the exam.
A.If he had revised all his lessons, he wouldn’t have failed the exam.
B.If he had had revised all his lessons, he wouldn’t failed the exam.
C.If he revised all his lessons, he wouldn’t have failed the exam.
D.If he would have revised all his lessons, he wouldn’t failed the exam.

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