bothers, mess, recycle, can, pick up, wrappers, clean, pleasant, smoke, litter, pollution, rubbish.
1. Please ____ pick up __ all the papers from the floor.
2. Why is there so much___ pollution ___ in the park?
3. We should ___ wrappers___ the paper we use at school.
4. It ___ rubbish ___ my parents when my room is untidy.
5. Your room is a ___ litter ___ . Tidy it immediately!
6. Could I please have a ___ recycle ___ of fruit juice?
7. The opposite of dirty is __ bothers ____ .
8. We all want to live in ___ clean ___ a environment.
9. Cars and buses cause air__ pleasant ____ .
10. There are chewing-gum ____ mess __ all over the floor.