听力原文：W: Hi, Kevin. Your roommate told me that I could find you in the TV lounge. What

M: What does it look like I am doing？

W: Well, it looks like you are watching television. But we have a linear algebra mid-term tomorrow, so I thought you would be studying for it and maybe I could study with you (19) .

M: Oh, well, I was just taking a break. This linear algebra stuff gives me a headache if I work on it too long (20) .

W: I know what you mean. I've been working on it for three hours already. Pm beginning to go cross-eyed. I've been worrying about the sample problems. I just don't get some of them.

M: But I can' t believe you' re coming to me. I mean you do know what 1 got on the last test, don' t yon (21) ？

W: Yeah, I know. You told me I just thought two heads might be better than one.

M: Yeah, that's a nice idea. But… you know, I wish I knew that person in our class who got a hundred on the last test. She didn't miss a question. Umm… was it Elizabeth？

W: Oh yeah, Elizabeth! She is a friend of mine. She'd be a big help right now. Why don't I give her a call？

M: What! At this hour？ It's already ten-thirty. I don't want to impose on her (22) .

W: Yeah, I guess you are right. But you know what？ She owes me a big favor. Let's at least give her a call and see what she says. Maybe going over some of the problems with us would help her review the material

M: It's worth a try.

(23)

A．A presentation they're going to do.

B．A TV program the man is watching.

C．Visiting a good friend of theirs.

D．Studying for a coming test.