I missed class because (mix and match as needed):
Had to work on other stuff
Writing a Projector article
Hosting a show on KICK-FM
Alarm didn't go off
Class? What class?
Now that I'm back (mix and match as needed):
Did I miss anything important?
Where can I get the assignment you handed back?
Are you mad that I missed?
What's the due date of the assignment I missed?
Can I have my course outlines again?
Can you explain to me what I missed?
Why did I get this mark?
Am I failing?
Assignment? What assignment?
Here's a generic doctor's note.
Now that I've finally graduated (only one option):
Will you be my reference?