1. DJ: Raise your hand if you want to answer a simple question for a chance to win a brand new car. Who is the most enthusiastic person in the audience?2. Organizer: Please do your best to join us and hear about our plans for serving our members even better.
enthusiastic請大家踴躍參與 = Please do your best to join us.
It gives the illuson that you've computed the entire answer immediately.