David felt sad as he walked down home alone. He couldn't help (think) about his mistake(错误) in the sports meeting. He fell down during the race. His mistake made his class (lose) the game.
As soon as he at his home, his mother found he was really sad, for it was shown on his face. she listened to David's story, she told her son that it was not necessary to be too hard on himself. And she said that losing or was only half the game. She asked David to talk with his (classmate). she also told him that everyone wanted to win, but the (important) thing was to support（支持）each other in a class.
The next day, he went to school as usual and said to his classmates for his mistake. But to his (surprise), his classmates said one tree didn't make a forest and they should keep working as a team. They are going to help each other and work much (hard) the next time.
