Yesterday was Saturday. When Billy was watching a football game, the phone rang(响起铃声). It was his mother. She asked him to go round for lunch.
Billy quickly drove to his mother's house. His sister and her children were there. The children were happy to see him because he always played with them. They wanted him to play games with them and Billy said OK. They played for hours. By lunchtime, Billy was tired but the children still wanted to play. Luckily, it was lunchtime and Billy used that as an excuse to stop playing with the children.
After lunch, Billy's mother wanted Billy to take a chair to his grandfather's house. However, the lift(电梯)was not working. Billy had to take the stairs(爬楼梯).After taking the chair to his grandfather's house. He helped his grandfather clean the house. Then he read newspapers to his grandfather.
After Billy got home, he went to bed straight away. Billy felt even more tired than on a working day.