Today, my mother gives me a task when she leaves home, she asks me to clean the house. I say yes and promise to surprise her. But soon I forget the task and play the computer games.

Today, my mother gives me a task when she leaves home, she asks me to clean the house. I say yes and promise to surprise her. But soon I forget the task and play the computer games. When the time passes, I suddenly remember and clean the house quickly, I must follow my words. When mother gets home, she praises me. 
今天,我妈妈给了我一个任务,当她离开家的时候,她叫我打扫房子。我答应了,并承诺给她一个惊喜。但很快我忘记任务了，玩电脑游戏去了。时间过得很快,我突然想起来了,迅速打扫房子,我必须遵守我的承诺。当妈妈回家的时候,她称赞了我。