1. Next week our class is having a discussion about finding_______ways to reuse old items before throwing them away. (Interested/ Surprising/ Useless/ Survey)

2. It is a good idea to______our clothes with our friends or cousins. ( Change / Swap/ Turn/ Send)

3. If people turn off all electric appliances in one hour all over the world, they can save a lots of_________( Electric/ Electrical/ Electrician/ electricity)

4. You should put the food in a reusable box___plas bags. (By/ Instead of/ Because of/ Without)

5. If we use_______paper, we will save a lot of trees. (Fewer/ Less/ More/ Much)

6. Don' t throw rubbish into the river because you will make it______________>(Greener/ Dirty/ Cleane/ Fresher)

7. If there  is a rubbish bin in every class, the classroom will become_______________( Harmful/ Lighter/ Dirtier/ Cleaner)

8. If we all use_________bags, we will help the environment. ( New/ Cheap/ Reusable/ Reduced)

9. This newspaper is made of_____paper. (Recycle/ Recycled/ Old/ Waste)

10. Please collect all the recyclable materials, and take them to the_______-factory. ( Recycle/ Recycled/ Recyclable/ Recycling)

11. Reduce, reuse, recycle is said to encourage people to waste less, by using less and using things, in order to__________the environment. (Harm/ Damage/ Pollute/ Protect)

12. These three Rs_____________reduce, reuse and recucle. (Stand up/ Stand for/ Ask for/ Means)

13. If you have old clothes, will you give them to those___________?(Needs/ To need/ For needing/ In need)

14. It's very_________--to swim there. The water is healthy polluted (safe/unsafe/unpopular/exciting)

15. Many girls and women_________aerobics to keep fit. (play/ go/ do/ have)