I have fun什么my friends on the phone.a,talk in b,talk with c,talking to d,to talking with

题目

I have fun什么my friends on the phone.a,talk in b,talk with c,talking to d,to talking with

答案

C.talking to
have fun doing sth 做某事感到很愉快
我在电话上和朋友聊天感到很愉快.