Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

Câu hỏi

John didn’t do revision for the exam. He couldn’t pass it.

A. If John had done revision for the exam, he could have passed it.

B. If John had done revision for the exam, he couldn’t have passed it.

C. If John hadn’t done revision for the exam, he couldn’t have passed it.

D. If John hadn’t done revision for the exam, he could have passed it.

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