M: Do you like our new history teacher? ,F: I'm tired of his endless talking, he never gives us a little time to discuss things. ,M: You can't say that, he is a very knowledgeable person. ,F: But I can't see it.
(A) M: Maybe you can't see it, but our Chinese teacher is a very knowledgeable person. (B) M: I am afraid I did not quite catch what you were saying. Please repeat it. (C) M: Maybe you can't see it, but our history teacher is a very knowledgeable person. (D) M: Our politics teacher we have been talking about is very knowledgeable.
C