― My sister bought me a new MP4 player, but I don’t know ________
― Let me show you。
A. how to use it B. where to use it
C. what to use D. which one to use
― My sister bought me a new MP4 player, but I don’t know ________
― Let me show you。
A. how to use it B. where to use it
C. what to use D. which one to use
A点拨： 根据句意，如何使用。故选A。