Mr Black has two cats. One is big and the other is small. He likes them very much.
布莱克师长西席有两只猫。一只大猫一只小猫。他非常喜好这两只猫。
One day his friend Mr Green comes to see him. He is very surprised. He finds there are two holes in the door, a big hole and a small hole.
一天，他的朋友格林师长西席来看他。他很惊异。他创造门上有两个洞，一个大洞和一个小洞。
He says, “My dear friend, why are there two holes in your door?”
他说，“我亲爱的朋友，为什么你的门上有两个洞？”
“To let them in and out,” Mr Black answers.
“让他们进出啊。”布莱克师长西席回答。
“But why are there two holes?” asks his friend.
“但是为什么有两个洞？”他朋友问。
“How can the big cat go through the small hole?” he says.
“大猫怎么能通过小洞呢？”他说。
