Sarah is a Canadian girl. She is staying with Ken’s family. She has been in Osaka for half a year. One day after dinner, Sarah and Ken were talking about computers. “Are computers useful in our daily lives?” asked Ken. “I think they are very useful. We can do a lot of things with them. But we should think of both the good points and the bad points,” said Sarah. “Have you ever used a computer at your school in Canada?” asked Ken. “Oh, yes. I often sent e-mails. When I sent an e-mail to my friend in the United States for the first time, she answered it very quickly. I was surprised at that.