急！用英语写段对话

A:Hello, Jack . How are you? 你好，杰克。
B:Fine，thank you，Tom. And you? 谢谢，汤姆。你呢？
A: Fine, too. 我也好。
B: What's the matter? Why are you looking so unhappy? 怎么了？你看起来很不开心？
A：Can you see the white plastic bags in our school? They are everywhere.看到校园里的白色塑料袋了吗？到处都是。
B： Yes, but what can we do with it?是啊，但我们能做什么呢？
A：I think we must think about it. 我们必须得想想了。
B：I agree with you. Free plasiics bags hasn't been given in supermarket.我同意。超市都不提供免费塑料袋了。
A：But the plastics in the near shops are free.但我们周围的商店都是免费的。
B：So some rules must be made. 必须采取点儿措施了。
A：And we can also ask our students to reuse them. We can collect them and sell them.我们可以让学生重复使用，或者收集起来再卖掉。
B：You are right. That's a good way to protect our environment.对，这是环保的一个措施。
A：I can make some posters about environmental protection.我可以做些关于环保的海报。
B: Let's do it together.我们一块干吧。