The telephonetalking to prople far away.A. used buyB. is used forC. is used toD. used for

问题补充：

The telephonetalking to prople far away.

A. used buy

B. is used for

C. is used to

D. used for

答案：

A. used buy

(答案→)B. is used for

C. is used to

D. used for

解析：句意：这个电话是用来和远方的人们通话的，is used for doing =is used to do被用来做什么，结合语境可知选B。