English is used all over the world .Most of the calls ----in English People like to do business ----

题目

English is used all over the world .Most of the calls ----in English People like to do business -------.
A.make ,using phones B.are made ,by phone C.are made ,with phone 为什么?为什么不用with phone

答案

by phone在英语里面是一个固定的搭配,即“通过电话”