Choose a word that has different stressed syllable from others.
1. A. reply B. greener C. picnic D. people
2. A. warning B. because C. better D. cleaner
3. A. meaning B. product C. belong D. column
4. A. combine B. unique C. become D. number
5. A. student B. below C. money D. airport
6. A. plastic B. carbon C. Today D. picnic
7. A. manage B. reduce C. combine D. explain
8. A. symbol B. dolphin C. product D. instead
9. A. recycle B. describe C. borrow D. become
10. A. doctor B. exchange C. onion D. forest
11. A. pollution B. energy C. plastic D. atmosphere
12. A. garbage B. rubbish C. paper D. material
13. A. environment B. transport C. protection D. pollution
14. A. reusable B. recyclable C. dangerous D. polluted
15. A. deforestation B. disappearance C. electricity D. conservationist
16. A. reduce B. reuse C. traffic D. effect
17. A. prepare B. watseful C. reusable D. recycle
18. A. pollution B. deforestation C. environment D. material
19. A. president B. effect C. exchange D. pollution
20. A. charity B. disappear C. energy D. natural
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