2dRole-play the conversation.
Nick: What are you reading, Jill?
Jill: It's a book about the future.
Nick: Sounds cool.So what will the future be like?
Jill: Well, cities will be more crowded and polluted.There will be fewer trees and the environment will be in great danger.
Nick: That sounds bad! Will we have to move to other planets?
Jill: Maybe.But I want to live on the earth.
Nick: Me, too.Then what can we do?
Jill: We can use less water and plant more trees.Everyone should play a part in saving the earth.
