Which of the following can he inferred from the  p...

Câu hỏi: Which of the following can he inferred from the  passage?

A. It is impolite if you give extra money for the   waiter.

B. Whenever you receive your bill, you should think of leaving  soon.

C. Paying meals for another may insult them.

D. Imitating others if you are not sure what to do at the meal is a good idea.