Given the question "What does the mother want her son to know most of all?" and the answer "Trees are very important to man.", write a conversation that might have happened.
Li Ming: What are you doing, Mum?Mum: I'm getting something ready for tomorrow. Tomorrow is Tre e-planting Day.Li Ming: Tree-planting Day? What do people do on this day, Mum?Mum: Many, many people will go and plant trees.Li Ming: Why do they do tha t?Mum: To make the earth more beautiful. And to make our life better.Li Ming: But I often see people on TV cut down many big trees. Why do they do that, Mum?Mum: Hm, to make paper, houses, and to make our life better.Li Ming: To make our life better, too? I just don't understand. Mum, why do many people go and plant trees on the same day?Mum: Oh, my dear son. It's hard to explain to you. When you grow up, you will understand. Just remember trees are very important to us.