It's noon. Jenny, Brian and Danny are outside in the schoolyard.
Jenny: Today's June 5. It's World Environment Day!
Brian: It's a special day to draw people's attention to the environment. What shall we do today? Look at all of this rubbish!
Danny: What does“rubbish” mean? I don't know that word.
Brian: It means “garbage” in American English.
Danny: Oh, I see. There's a lot of rubbish in the schoolyard. We should pick up the garbage!
Jenny: Let's do it now.
Danny: It would take too long. There are only three of us!
Jenny: We're studying pollution in class this week. Garbage is a type of pollution. This could be a class project! We can ask our classmates to help us.
Brian: Good idea. Each student could clean up a bit of the schoolyard. We would finish cleaning in an hour!
(Jenny explains the plan to the class. All the students agree to help. They wear gloves and carry brown bags. They begin to pick up the garbage.)
Jenny: Danny, you lost your homework, right? I think I found it! Look at this piece of paper! Danny: Oh no!