Unit 1: A PICNIC BY THE RIVER

A: This is a good spot. Let's stop and have our pinic next to the river.
B: Good idea! Walking always makes me hungry. I'm ready for lunch.
A: We can sit here on the grass. Oh no, someone  forgot to throw these empty paper bags away. There is litter everywhere.
B: Why do people always leave litter around? It's not a nice thing to do. It spoils other people's picnics.
A: I think they are lazy. Or maybe they just don't care. Look, there are some empty cans and glass bottles under that tree, too.
B: people should clean up berfor they leave. And not leave litter lying around.
A: That's right. Well, after our picnic, let's pick up all the litter we can and take it out of here.
B: Ok. And next week, let's come back with friends and pick up some more.
A: Good idea!