今天，我妈妈因为有事情要做，所以她要我见她的朋友。我许下在她回家前会打扫完房子的诺言。

Today, my mother has something to do, so she needs to meet her friends. I make a promise that I will clean the house when she returns. But I become lazy soon. I start to play computer games and forget my promise. When I remember, I start my work quickly. I feel so bad to almost let my mother down. Luckily, I finish my job and my mother feels happy. 
今天，我妈妈因为有事情要做，所以她要我见她的朋友。我许下在她回家前会打扫完房子的诺言。但是我很快就变得懒惰了，我开始玩电脑游戏，忘记了我的承诺。当我想起时，快速地完成了工作。我感到很糟糕差点让妈妈失望了。幸运的是，我完成了工作，妈妈也很开心。