—My mother bought an MP4 player for me，but I don’t know ．
—Let’s read the instructions first．
A. how to use it
B. which one to use
C. what to use
D. how to use
网友回答
(答案→)A. how to use it
B. which one to use
C. what to use
D. how to use
解析：本题的含义是我买了一个mp4，但我不知道怎么样去使用它，所以才建议去看说明书，how to use it表示如何去使用它，与题意较符合，故选A。