A: Hi, Jill. What are you these days?
B: I'm reading a book about the future.
A: Sounds cool. So what does it write about?
B: It's about what the future will be .
A: Can you tell me something about it?
B: Of course. Cities will be more crowded and polluted. There'll be fewer trees and the environment will be in danger.
A: That sounds bad! can we do with that?
B: Maybe we'll have to move to other planets.
A: But I want to live on the earth.
B: Me, too. So we must do something to save our earth now.
A: I agree with you. We can use less water and plant trees.
B: I think everyone should play a in saving the earth.
