Jackie, your brother is trying to sleep. Could you please your radio?
A. pass on
B. turn on
C. put down
D. turn down
网友回答
A. pass on
B. turn on
C. put down
(答案→)D. turn down
解析：pass on 传递，继续；turn on打开，发动；put down记下，贬低，制止；turn down减小，调低。句意：杰基，你的哥哥想睡觉。你能把收音机关小点吗？结合语境可知选D。