We keep in touch with each other____ letters. A. in B. with C.by D. use

分类: 作业答案 • 2021-12-20 03:09:01

问题描述：

答

C
with 后常加有形工具.
in 后常加语言,墨水,颜料
by 后加交通工具,无形的手段