What is Dr．Wilson?

M: Dr．Wilson．can I talk to you a minute?
W: Sure．Fred．What is it?
M: I’m worried about my grade in your English class．I really want an A, but my job has kept me busy．

W: What do you do in your spare time?
M: Oh，nothing special．I read, watch TV and go to the movies．
W: Don’t you have any hobbies like collecting stamps or things like that?
M: I have just one—photography．It’s expensive，but it’s a lot of fun．