Yesterday, I cleaned my room.

昨天，我打扫了我的房间。

I finished my homework.

我完成了家庭作业。　 　

My trousers were very dirty. I washed them.

我的裤子非常脏。我洗了它们。

Then I helped my mum. She was very happy.

然后我帮助了我妈妈。她非常高兴。

You are a very good boy, Daming.

你是一个非常好的孩子，大明。

Thank you, Mum.

谢谢你，妈妈。