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1. That is __________ book I’ve ever read.
A. the boredest B. the boring C. the most boring D. the most bored

2. The opposite of "polluted" is ______________.
A. fresh B. good C. dirty D. safe

3. We should use reusable water bottles __________ of plastic ones.
A. instead B. because C. despite D. however

4. In the future, we won’t go on holiday to the beach but we __________ go on holiday to the moon.
A. must B. can’t C. might D. won’t

5. ________ you swim when you were ten?
A. Can B. Could C. Will D. Might

6. My father likes watching TV ____________ he doesn’t like listening to music.
A. and B. so C. but D. because

7. We should use __________ pens and pencils to reduce rubbish.
A. reliable B. reusable C. refillable D. sociable

8. In the future, we will have __________ to do housework.
A. robots B. wireless TV C. smart phone D. hi-tech fridge

9. Eiffel Tower is the most attractive ______________ in France.
A. building B. resort C. square D. landmark

10. We should use __________ to save natural resources.
A. oil B. solar energy C. coal D. gas

11. __________ means creating new products from used materials.
A. Reduce B. Reuse C. Recycle D. Rebuild

12. If the __________ is polluted, we won’t have enough food to eat.
A. water B. air C. noise D. soil

13. We should give unused clothes to __________ to help the people in need.
A. charity B. factory C. market D. hospital