根据短文内容填空。
A teacher often tells his students thinking is very important (重要的). He tells them when they want to
say something, they should think first.
And he also tells them how to do it. He says, "Let me show you the way to do it. Before you want to say
something important, you count (数数) from one to fifty. If you have something very important to say, then
you count from one to one hundred."
One day, he stands in the front of the class. There is a stove (炉子) behind him. When he is speaking, he
finds some students saying something quietly.
Suddenly all the students shout, "Ninety-eight, ninety-nine, one hundred. Your coat is on fire,
sir!"
The teacher often tells his students is very important. He tells them they want to say
something, they should first.
He also tells them to do it. One day, he in front of the class. There is a behind him.
When he is , he finds some students saying something .
Finally, the teacher's coat is .
