Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. _______, he would have been able to pass the exam.

Đáp án B.

Nhìn vào động từ would have been ở vế 2 (mệnh đề chính) ta đoán được đây là câu điều kiện loại 3 → Chọn đáp án B. Had he studied more là phù hợp.

Lưu ý: Đây là câu điều kiện loại 3, tuy nhiên bỏ “if” và sử dụng đảo ngữ “Had + S + PP…”.

Ex: - If I had known about it earlier, I would have told you = Had I known about it earlier, I would have told you.

- If she hadn’t been late, she could have seen her friends off = Had she not been late, she could have been her friends off.