Write a letter to your teacher asking her for a leave due to illness?

Dude, seriously? A letter? Theres no need. Just send em a mass email(one email that goes to all your teachers at once. Just put multiple email addresses in the "to" box) send a mass email saying "hey its (name) and im gonna be out tomorrow, what am i gonna miss?" They wont be mad at all, in fact, they will be DELIGHTED that you care enough to ask. Most people just ignore all their work till they get back. (Teachers dont mind that either) i usually just ignore it all till i get back.