Janet: Look, this is a picture of my family. 
Kate: It's beautiful. Who's the lady? 
Janet: She's my mother. 
Kate: What's her job? 
Janet: She's a dentist. 
Kate: What does a dentist do? 
Janet: When people have a tooth-ache, a dentist can help them.
Kate: Wow, your mother is great. 
Janet: Yes. She likes her job very much, and most of the patients like her, too. They said she is a good dentist. She is my heroin. 
Kate: Do you want to be a dentist when you grow up? 
Janet: No, I don't. I want to be a basketball player. 
Kate: Oh, that's great!