Mark the letter A, B, C, or D on...

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

A. If the taxi driver ignored the stop sign, he crashed his vehicle. 

B. Unless the taxi driver paid attention to the stop sign, he would have crashed his vehicle. 

C. The taxi driver would not have crashed his vehicle if he had taken notice of the stop sign. 

D. The taxi driver didn’t ignore the stop sign, or he would not have crashed his vehicle.