What was the people . s solution to the high cost of mail service?
A. They traveled to the area where their family or friends lived.
B. They didn.t keep in touch with their friends any more.
C. They asked those who traveled to the area where their family and friends live to send the message.
D. It doesn.t say in the passage.
出自:乐山师范学院第二外语(英语)