Mark the letter A, B, C, or D to indicate the correct answer: ___ my homework lastĐoạn văn9/40Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. _________ my homework last week, I would have got a good mark.If I didI had doneHad I doneOnly if I doneGiải thíchĐáp án C.