Dear Ms.XXX I am Wang Li,I can't come to have classes today,because my leg is hurt.I fell from the ladder when I helped the peasant picking the apples in the farm yesterday.Though my leg is hurt,but it is luckily that it is not serious.However,the doctor ask me to rest for two days,so I specially ask for two days' leave and hope you can approve it.Sincerely,Wang LiMarch 19th, 2011