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

The train was crowded. I couldn’t find an empty seat.

A. If the train hadn’t been crowded, I couldn’t have found an empty seat.

B. If the train had been crowded, I couldn’t have found an empty seat.

C. If the train hadn’t been crowded, I could have found an empty seat.

D. If the train hadn’t been crowded, I can have found an empty seat.

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