Conversation One
　　W: Excuse me, are you going to buy that book?
　　M: Well, I need it for a class but it’s awfully expensive.
　　W: Oh, we must be in the same class. Introduction to British Literature?
　　M: Yes, that’s the one. Were you there yesterday for the first class?
　　W: I sure was. Professor Robert really seems to know his subject.
　　M: Yes, I took his Shakespeare course last semester and it was very good. He likes listening to his students.
　　W: That’s a relief. I’m a biology major and I was a little uncertain about taking an English course.
　　M: I’m an English major and this is a required course. But now I’m in trouble because I’m not sure I can afford this book.
　　W: Hey, I’ve got an idea. Why don’t we split the cost and share the book?
　　M: Sounds great. Do you live on campus?
　　W: Yeah, I live on the 10th floor of Butler Hall.
　　M: Perfect. I live on the 3rd floor of Butler. We should have no trouble sharing the book. I can bring it up to your room right after I wrap up the assignment.
　　W: It’s a deal.

Questions 19 to 21 are based on the passage you have just heard.
19. Where is the conversation most probably taking place?
20. Which class are the man and the woman taking together?
21. What does the man think about Professor Robert?