楼上写的蛮好,是标准格式,考试上可以这么写,但是日常没必要这么啰嗦.直接这么写就行. January 5th 2010 Dear Sir, I'm sorry to tell you that I can't go to school today,I've caught a cold last night,and I feel really bad this morning. So I want to ask for one day's leave. Sorry for being absent. Best wishes Your student .
