dialogue: W: John, you look pale. Didn't you sleep last night? M: I did sleep, but I went to bed at around 2 so I'm quite sleepy. W: Why? We don't have any important projects to hand in. M: Well, the football final was on so...
question: Why is the man sleepy?
choice: He got up too early this morning. He stayed up late to watch TV last night. He worked on his projects late last night.
answer: He stayed up late to watch TV last night.