An old cat works very hard. He catches many mice every day. People love him very much. The king is very happy. He wants the eat to become an officer. He asks the cat to his room and has a talk.
"Mr. Cat, you are good at your work, " says the king. "I want you to become an officer." "I’m sorry, my dear king, " says the cat. "I don’t want to be an officer." "Why" asks the king.
"Because I am old. I want to have a rest, " answers the eat. "Please ask some young eats to be officers." The king says nothing. The best title of the passage is ______.