A、He is a good father. B、He has no child. C、He likes children very much. D、He understands children. B女士问男士怎样才算好父亲。男士说他并未亲身经历，可知

W: So, Matt, (19)we’re talking about adjectives this week, or qualities about people . so let’s talk about what makes people good at what they do. First of all, what do you think makes a good student?
M: I think somebody who is self-motivated and who takes an interest in what he is doing and works at it.
W: You mean, you like people who are outgoing and have a good personality.
M: Yeah, but reality is that not every student can be like that. I think the most important thing is to show interest and participate and work outside of class.
W: I totally agree. OK, so now what makes a good boss?
M: I think(20)a good boss is somebody who knows the people who work for him. WiTo be exact?
M: He knows the strengths, he can communicate what he really wants for each worker and he can delegate responsibility.
W: Right. OK, now moving on, what makes a good friend?
M: A good friend? I think somebody who just can listen and offer a kind of unconditional love and anything you do can’t hurt the relationship. He should also be loyal and honest basically.
W: OK, and this is the last one. What makes a good parent?
M: (21)A good parent! Not that I would know from firsthand experience, but I think, just somebody who is there always and who takes care of the child and spends quality time.
W: So what do you mean by saying quality time?
M: You know, parents who really are there and listen and talk to kids usually have the greatest success in dealing with children.
19. Q: What are the speakers doing?
20. Q: According to the man, what makes a good boss?
21. Q: What do we know about the man from the conversation?