补全对话
Mary: Hi, Bill.?
Bill: I want to join a sports club.
Mary: Great!?
Bill: Soccer.
Mary: So you can join theclub.
Bill: What about you? You're very good at telling stories. You can join the story telling club.
Mary: . But I like to draw, too.
Bill: Then join two clubs, the story telling club and the art club!
Mary: OK, let's now!