A、In the late morning. B、Immediately after lunch. C、In the mid-afternoon. D、After the evening meal. A

Susan: Hi, Susan. Where were you at lunchtime? I was saving a seat for you in the cafeteria.
Prof: Hall: Oh, sorry to miss you. But my thirst for knowledge was greater than my pangs of hunger.
Susan: I never had that problem. So where were you?
Prof: Hall: My political science class ran overtime.
Susan: That’s been happening quite a bit lately, hasn’t it?
Prof: Hall: I guess so. Actually, what happens is that a bunch of us hang around for a while after class to talk with our professor and ask him questions.
Susan: Who is this twentieth century Socrates?
Prof: Hall: Professor Hall. Have you heard of him?
Susan: Yes. He does have a good reputation in the political science department.
Prof: Hall: And a well deserved one. The same students who fall asleep in discussion groups and seminars fight for front row seats in his lectures.
Susan: Oh no! I hope this isn’t catching.
Prof: Hall: You can joke, but it’s great to have a professor who’s not only interesting but prepared to give up time for students.
Susan: I know. They’re of a rare breed. Maybe I should sit in on his class sometime. Do you think he’d care?
Prof: Hall: Not at all. Lots of students bring their friends and he says he feels flattered.
Susan: Well, just to be safe, I think I’ll bring my lunch along as well.
Prof: Hall: I’ll make a good student of you yet.