Trả lời: Peng: How many people are going to come to the party?Bella: About thirty, I think.Peng: OK, thirty is good. Where are we going to have it?Tom:Let's have it in the gym.Peng: Who's going to decorate the gym?Bella: I am, and Todd's going to help me.Tom: Will there be live music?Bella: Of course. A...