Hộ mk bài này ạ Nếu đc thì giải thích hộ mk ạ

Mark letter A, B, C or D to indicate the underlined part of the sentence that is incorrect. Question 28: Making cross-word puzzles is James's hobby. A. Making B. cross-word C. is D. James's Question 29: The doctors know that it will be difficulty to save the life of the patient but the ...