Mary tried to keep calm although she was very disappointed. 2/20Mary tried to keep calm although she was very disappointed. Mary was too disappointed to keep calm. Disappointed as she was, Mary tried to keep calm. Mary lost her temper because of her disappointment. Feeling disappointed, Mary tried to keep calm, but she failed.Giải thíchĐáp án đúng: B Dịch: Mặc dù thất vọng là vậy, Mary vẫn cố gắng giữ bình tĩnh.