Which of the following statements is NOT true about the postal service?
In the United States, the postal service belongs to ______.
What can the postal service do?
“Postal Administration of the People’s Republic of China”的意思是()
“万国邮政联盟”的正确英文拼写是“Universal Postal Convention”。
What’s the difference between “postal worker” and “postman” according to the passage?