拜托，谁能帮我解答？？？？翻译一下！！！急啊！！！！

Dear Mrs,Miller:
I am sad that l would not attend classes , the reason is that l have running nose and have been coughing for 3 days.I had a fever yesterday and was weakness of all body.Beause of that , i go to the hospital in the morning and the docoter tell that i have a flu.what is more, the docoter advise me to have a rest for 2 to 3 days
I would appreciate it if you allow me to have 3 days off
Yours;
LIFeng
2007,4,20