dialogue: W: Hi, Don. Would you like to go swimming this afternoon? M: I wish I could, Jenny, but I have to spend the rest of the day in the library. I have a ten-page paper due tomorrow. W: Oh, is that for Professor Smith's class? M: Yes, I have to write an article on a poem we read in class. W: That's hard. How is it going so far? M: Not very well. And I also have to study a lot for maths and history. I don't know how I'm going to do it at all. W: You know, Don. I've been doing well in maths, so I'd be happy to help you. M: OK, Jenny, I'll see you in front of the library. W: Good luck with the poem.
question: Why can't Don go with Jenny?
choice: He has to talk with Professor Smith. He has to finish a paper. He has to take a maths test.
answer: He has to finish a paper.