Chủ đề:
Luyện tập tổng hợpCâu hỏi:
I think he didn’t take a bus yesterday because there aren’t any buses on Sundays.
A. He couldn’t have taken a bus yesterday because there aren’t any buses on Sundays.
B. He mustn’t have taken a bus yesterday because there aren’t any buses on Sundays.
C. He needn’t have taken a bus yesterday because there aren’t any buses on Sundays.
D. He mightn’t have taken a bus yesterday because there aren’t any buses on Sundays.
ai giải thích cho mình câu này sao lại chọn A với ạ