书面表达：假如你是李军，你的美国笔友David来信想知道你是怎么过周末的。

Dear David,
Thanks for your letter. Now let me tell you how I spend my weekend.
I usually get up late on Saturday and Sunday mornings because I want to have a good rest. After the brunch I do my homework in the morning. In the afternoon I often go over what I have learnt this week, then I do sports to train my budy. I often play basketball or succer with my friends. In the evening I help my mum clean the rooms. After that I read news and watch movies on the Net. At about ten o'clock I say Good Night to my parents and go to bed.
Would you please tell me how you spend your weekend?
Yours,
Li Jun