Inthepast,Ioftenwroteletterstomyfriends.Butnowwekeepint...
问题详情：
In the past, I often wrote letters to my friends. But now we keep in touch _____ each other bytelephones and the Internet.
【回答】
D
知识点：介词和介词短语
题型：选择题
问题详情：
In the past, I often wrote letters to my friends. But now we keep in touch _____ each other bytelephones and the Internet.
【回答】
D
知识点：介词和介词短语
题型：选择题
