补全对话。 A: Good afternoon, Miller! l B:I'm drawing a horse. A:A horse? Can you let me have a look? B: 2 . Here you are. A: Oh, the horse looks very nice. Do you often draw in your free time? B: 3 . A: Do you like drawing? B: Yes. I like drawing very much. A: 4 ? B: Because it's very interesting. And my art teacher is very kind to me. A: 5 ? B: I have an art lesson once a week.