问题
选择题
Don't do any other things while you are doing your homework. So please ____ your MP3. [ ]
A. turn up
B. turn down
C. turn on
D. turn off
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Don't do any other things while you are doing your homework. So please ____ your MP3. [ ]
A. turn up
B. turn down
C. turn on
D. turn off
答案：D