F: I can't give you a tour now I'm afraid. I have to stay here at the help desk since all the other librarians are very busy now. But I can show you a few places in the library here on this map.
(A) M: Ok, you can show me a few places in the museum here by using a map. (B) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) M: You can show me around the library when you don't have to stay at the help desk. (D) M: Ok, I can ask another librarian for help, because they are free now.
B