M: Lucy, I heard that you got a new job. Is that true? ,F: Yes, Tony. I am working as a guide in our city's museum. I introduce unexplained pictures, items and things to the visitors.
(A) M: So you need to teach lessons to visitors as a guide in the zoo. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: So you need to show visitors how to learn history as a guide in the library. (D) M: So you need to introduce pictures and items to visitors as a guide in the library.
B