21. Alan: Are you interested in Dr. Wu’s speech? Barbra: Yes, I like it a lot. Alan: I guess we will see each other at the conference, won’t we? Barbra: _________________ (A) Yes, I will have a conference call. (B) No, I will meet you at the conference. (C) Yes, I’m really looking forward to that. (D) No, I will look around the conference room.