Giúp mình nha mng, cảm ơn ạ 13. Mathematics, one of the compulsory school subjects, play an important role in our lives( tìm lỗi sai)     A. play                 B. role C. one of D. subjects 23. She advised me not to smoke a lot.      A. She said to me: “If I am you, I won’t smoke a lot”      B. She said to me: “If I was you, I would smoke a lot”      C. She said to me: “If I were you, I wouldn’t smoke a lot”      D. She said to me: “If I were you, I will smoke a lot” 24. Although the weather was bad, the farmers kept on working in the fields.     A. In spite of the bad weather, the farmers kept on working in the fields.      B. Despite the weather was bad, the farmers kept on working in the fields.      C. In spite of the bad weather, but the farmers kept on working in the fields.      D. Because of the bad weather, the farmers kept on working in the fields.