Tom your MP4 is quite nice. How much is ? I want to buy .A. one; it B. it; one C. one; on

问题补充：

Tom, your MP4 is quite nice. How much is ? I want to buy .

A. one; it B. it; one C. one; one

答案：

解析：本题的含义为你的MP4多少钱，我想买一个，完全代替上文中的事物用it，指上文中的事物用one，故本题选B。