One day last week, Yingtian has a computer lesson. It lasted for nearly three hours. At about five, he got home and waited for the lift to come. A girl was there too. When the lift door opened, they both went in. The girl push “10”.Yingtian quickly pushed “2”and then “5”.The lift began to go up. It stopped at the second floor and then at the fifth, but Yingtian didn’t get out. The girl looked at him.

“Did you forget to get out?” she asked.

“No, didn’t. I ‘m going to the 25th floor.” he answered.

“But you pushed “2” and “5”!”She said.

“Did I?” said Yingtian. And then he remembered. ”oh, no! I worked on the computer for three hours this afternoon. They both laughed” Maybe three hours is a little long.” she said.