I can't attend school because.....
I have to see a doctor .
I feel wose I am writing to ask you for a day's sick leave
if I feel better tomorrow,I....
Dear teacher,
I am xiaoming.I can't attend school,as I got a cold carelessly yesterday.Wherefore I have to see a doctor and have a rest.I feel regret that I am writing to ask you for a day's sick leave.If I feel better tomorrow,I would go school as soon as possible!
your student
ming