用正确形式填空。6_8y2T(m+P2a'F2q.O9X
The MP3 costs only 300 yuan. I think it’s 7t4?0{9F)T*v)a-T6B3`+M.P.y6k（expensive）. I can afford it.6_8y2T(m+P2a'F2q.O9X