We keep in touch with each other ________ letters and telephones.a.by b.in form of c.in forms of d.in the form of为什么不选A,BC有没有这种形式.

分类: 作业答案 • 2021-12-20 03:08:55

问题描述：

We keep in touch with each other ________ letters and telephones.
a.by b.in form of c.in forms of d.in the form of为什么不选A,BC有没有这种形式.

答