It could have been a lot worse _______ there. A. when he was not B. whether or not he had been C. for he had not been D. had he not been
Giải thích
Chọn đáp án D
had he not been there – nếu anh ta đã không có mặt ở đó
Chọn đáp án D
had he not been there – nếu anh ta đã không có mặt ở đó