My cousin George is obsessed ………………..keeping fit.Đoạn văn42/96Part 4:Questions from 51 to 55. (1 point - 0.2/ each) Fill in each blank with a suitable preposition. My cousin George is obsessed ………………..keeping fit.Nhập câu trả lời ở đây0/3000 ký tựGiải thíchMy cousin George is obsessed with keeping fit.