Two Holes

Two Holes

Mr Black has two cats. One is big and the other is small. He likes them very much. 

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 one. 

He says, “ My dear friend, why are there two holes in your door?” 

“ To let them in and out, ” Mr Black answers.