I bitterly regret __________ him the story yesterday.28/64Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. I bitterly regret __________ him the story yesterday.to be tellingtellingto tellto have toldGiải thíchĐáp án : B Cấu trúc “regret” + doing something: hối hận, hối tiếc làm gì