In this task, you're given a context passage. Your job is to generate relevant questions that can be answered by directly referring to the passage.
Q: It should be interesting . Niels was supposed to come to Metro , but I don't think he did unless he had come and gone by the time I got there . I didn't work today , but left my car there and walked to campus . If he didn't come today than maybe he'll be there tomorrow or Friday .
A:
What's a possible reason the writer didn't work today ?