The driver in front stopped so suddenly. Therefore, the accident happened

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

The driver in front stopped so suddenly. Therefore, the accident happened.

If the driver in front didn't stop so suddenly, the accident wouldn't happen.

If the driver in front hadn't stopped so suddenly, the accident would have happened.

If the driver in front hadn't stopped so suddenly, the accident wouldn't have happened.

If the driver in front had stopped so suddenly, the accident would have happened.

Giải thích

Ta dùng câu điều kiện loại 3 diễn tả hành động không xảy ra trong quá khứ

Cấu trúc: If + S + had + Vp2, S + could/would… + have +Vp2

Tạm dịch:

Tài xế phía trước đã dừng lại đột ngột. Do đó, vụ tai nạn đã xảy ra.

=>Nếu tài xế phía trước không dừng lại đột ngột, tai nạn sẽ không xảy ra.

Đáp án cần chọn là: C