Why do you often listen to the radio?TO get some information( ) A by air B on the air C in the air
问题描述：
Why do you often listen to the radio?TO get some information( ) A by air B on the air C in the air
麻烦各位把每一项都讲明白点~
还有一个选项：D、from the
答
选B.
你为什么常常听收音机啊?
为了从广播中得到一些信息.
by air 乘飞机
on the air1.电视中的,广播中的 2.正在电信联络 3.正在播出的
in the air悬而未决
TO get some information on the air是动词不定式短语作目的状语.