The telephone ____talking to people far away.A.used by B.is used for B.is used to D.used to

题目

The telephone ____talking to people far away.A.used by B.is used for B.is used to D.used to

答案

选B
A 由…用
B 用来做…（加的是doing动词ing形式）
C be used to doing 是指习惯于做某事
D used to do 指过去常常做某事
如果想指用来做什么,用be used to do,但这里的talking是ing形式,所以不能选C