A: Professor, I will not be here for our next class meeting. B: Is this absolutely necessary? A: I tried to work something out, but I really do have to miss one class. B: Will you be able to make up the work you missed? A: I'm going to be doing a lot of extra reading. B: Remember that I will only let you miss one class meeting per semester. A: Yes, I remember. B: Could you e-mail me this week as a reminder? A: Sure, no problem. B: Make good use of that day off; you'll only have one this semester!