A、Tonight. B、In two hours. C、Tomorrow. D、In a few minutes. C对话中，女士提到数学作业明天就要交了(theassignment’s due tomorrow)，其中的due指“到期，到预定的时间”，

W: Hello?
M: Hi, Jessica?
W: Oh, hi, Mike. What’s up?
M: Sorry to call you so late but I’m having trouble with the math assignment.
W: Don’t worry, it’s not that bad. But I do have to say that I haven’t worked this hard on an assignment all term. I’ve already spent more than two hours on it and I’m still not halfway through it.
M: Well, that’s still farther than I’ve gotten. I have no idea even where to start. I was thinking about calling Professor Johnson.
W: Now? But the assignment’s due tomorrow. He’ll wonder why you waited until now to ask for help.
M: This always happens. I mean, when I first got the assignment, I thought it looked OK and I figured I could do it in two hours. But now, it turns out I can’t even figure out how to get started.
W: Oh... well, do you want to come over? I could show you what I’ve worked out so far, and then we could work on the rest together.
M: Are you sure? I hate to interrupt you. I mean, I don’t want to hold you back.
W: It’s OK I’m sick of working on it alone. And anyway, if I’m thinking out loud, it’ll probably help clarify the most difficult parts for me, too.
M: Thanks a lot. I owe you big on this one. I was afraid I was headed for another bad grade.
W: No problem.
M: See you in a few minutes.
W: Okay. Bye.
12. Why does the man call the woman?
13. When will the speakers have to hand in the as signment?
14. What do we know about the man?
15. How does the woman respond to the man’s problem?