I have to miss school next week.
Isn't there some way you could work your schedule out to be here?
Unfortunately, this is what I have to do.
How are you going to catch up?
I've got it all covered.
If you miss this class, you will have used up your quota for the semester.
Don't worry, this will be the last class I miss.
Make sure to remind me right before you are absent.
I'll remember.
Enjoy your day off and don't forget to study!