My sister bought me a new MP5 player ,but I don't know_______. Let's me show you.A.what to useB.which one to useC.how to use itD.where to use it
问题描述：
My sister bought me a new MP5 player ,but I don't know_______. Let's me show you.
A.what to use
B.which one to use
C.how to use it
D.where to use it
答
C