What’ s wrong with John?

W: Hi, John. Have you got your work done for today?
M: Not yet, I think maybe the teacher won’t ask for it.
W: No always such luck. Last time she forgot to check our homework just because she got a cold. She is in better now and won’t forget it again.
M: Oh, my god. In that case, I have to stay up tonight to finish it.
W: I think so.