Choose the best answer (A, B, C or D).
1. If we____________ waste paper, we will save a lot of trees.
2. You can save money while shopping by only buying......... you need.
3. What can we do ........ air pollution?
4. Why do you often forget to __________ the lights when you go out of the classroom?
5. If we plant more trees in the schoolyard, the school will become a______place.
6. Do you think we should put a .... bin in every classroom in order to keep it clean?
7. My brother and I will give last year’s clothes to ......instead of throwing them away.
8. Next week our class is having a discussion about finding ....... ways to reuse old items before throwing them away.
9. If people turn off all electric appliances in one hour all over the world, they can save lots of .......
10. You should put the food in a reusable box ...........plastic bags.
11. If we use ..........paper, we will save a lot of trees.
12. Don’t throw rubbish into the river because you will make it...............
13. If there is a rubbish bin in every class, the classroom will become_________.
14. If we all use bags, we will help the environment.
15. This newspaper is made of ........... paper.
16. Reduce, reuse, recycle is said to encourage people to waste less, by using less and using things again, in order to ............ the environment.
