pen pencil ball-pen book ruler knife schoolbag pencil-box
One
Tom, look! I have a schoolbag. How nice!
Two
I have a pen. Oh, you have a pen. I have a pen, too.
Three
I have a pen. You have not a pen. You have a pencil.
You have a pen. I have not a pen. I have a pencil.
Four
I have a ruler. It’s a long ruler.
I have not a long ruler. But I have a short ruler.
Look at me! Look at the blackboard!
Listen to me! Listen to the radio!