W: Hi, Larry. Your roommate told me that I could find you in the TV lounge. What are you doing here?
M: What does it look like I am doing?
W: Well, it looks like you are watching television. 61 we have a linear algebra mid-term exam tomorrow, so I thought you'd be 62 (study) for it maybe I could study with you.
M: Oh, well, I was just taking a 63 . This linear algebra stuff gives me a headache 64 I work on it too long.
W: I know what you mean. I've been working on it for three hours already. I'm beginning to go crazy. I've been studying the sample problems. I just don't get some of 65 .
M: But I can't believe you are coming to me. I mean you do know 66 I got on the last test, don't you?
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 67 (know) that person in our class who got a hundred 68 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 wanna impose on her.
W: Yeah, I guess you are right. But you know what, she owes me 69 big favor. Let's at least give her a call and see what she says. Maybe 70 (go) over some of the problems with us would help her review the material.
M: It's worth a try.
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