Mark the letter A, B, C, or D on your answer sheet to indicate the cor

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

If it _____ for the life jacket, I would have drowned.

• A. A. is not
• B. B. was not
• C. C. has not been
• D. D. had not been

Vế sau có would have P2 => câu điều kiện loại 3. Ta có cấu trúc đặc biệt If it had not been for smt.