Jack is a good boy but he doesn't like to use his head. He often says something withou thinking.It makes others unhappy.

Mr. Black teaches math in a school. He's old now and he likes children.On the Friday Mr. Black doesn't go to work, because he's ill in a hospital. And Jack's mother will see him after dinner. "I want to be there with you." says Jack. "You're a rude boy. I can't take you there.'' says his mother. "Don't worry, mum. I won't do that again. Please believe me. " says Jack. In the hospital, Jack says nothing at first. When they're leing , he says to Mr. Black, "You look fine. The doctor says you're going to die, but I don't think so. "