3. Complete the sentences by changing the form of the word in capitals when this is necessary 1.     We all know that using our cars causes ________________________(POLLUTE), but we still do it. 2.     The giant panda is dangerous (DANGER) because its habitat is being destroyed. 3.     It was a wonderfully sunny (SUN) day, so we decided to go to the beach 4.     It’s ……………… (NATURE) dark for this time today. They didn’t say there was going to be an eclipse, did they? 5.     All our products are________________________ (ENVIRONMENT) friendly. 6.     Most scientists accept that________________________ (GLOBE) warming is a reality. 7.     Don’t worry! This snake is completely _________________________. (HARM). 8.     I hope they don’t _____________________ (LOW) the price of petrol.

1. This shopping bag is not ________ so I can buy it. A. cheap B. simple C. expensive D. green 2. ________ materials are good for our environment. A. Expensive B.Natural C.Polluted D.Fresh 3. Sewage from the factories is the main cause of ________ in this river. A. Soil pollution B. Air pollution C. Water pollution D. Noise pollution 4. Reusable bags are better ________ for the environment than ones. A. plastic B.rubbish C.shopping D.paper 5. I turned off the fan to __________ electricity. A. reuse B. save C.recycle D. reduce 6. My father switched the light ________ off before he changed the . A. dish B.refillable pen C.water bottle D.bulb 7. You should __________ things that can be recycled in a recycling bin. A. put B.wrap C.decorate D. swap 8. Most books and notebooks are made of _____________. A. plastic B.wood C.paper D. rubber 9. They __________ empty cans so that they can use the metal. A. recycle B.reduce C.swap D. reuse 10. You should give your old clothes to those ___________ . A. for fun B.for good C.in use D. in need 11. If we recycle waste paper, we ____________ less trees. A. will cut B.should cut C.won't cut D. must cut 12. Daisy will become 'greener' if she ___________ refillable pencils. A. use B.uses C.will use D .used 13. What will you do if ___________ someone throwing trash on the street? A. you can see B. you will see C.you see D.you saw 14. If we _________ more plants, we __________soil pollution. A. will grow/ reduce B. grew/ will reduce C. grow/ will reduce D. are growing/ will reduce

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II/ Find the word that has different stress pattern in each line.

11. A. survey                     B. exchange            C. rubbish               D. wireless 

12. A. animated                 B. television            C. helicopter           D. reusable

13. A. helmet                     B. palace                 C. machine              D. landmark

14. A. appliance                B. electric               C. location              D. president

15. A. reason                     B. reduce                C. reuse                  D. recycle

16. A. clumsy                    B. educational          C. entertaining           D. documentary

17. A. national                   B. adventure            C. program              D. viewer

18. A. weatherman             B. control                C. remote                D. schedule

19. A. favorite                    B. knowledge          C. document           D. memorial

20. A. popular                    B. awful                  C. entertain             D. stupid

     1.       ______ you  (see) _______a real robot at work in the past ?

     2. If the weather  (be) ________fine , we (plant) ___________some young trees in our garden.

     3. I ( read ) ____________that novel last night.

     4. Maryam (stay)____________ with us at the moment.

     5. we might (visit)______________ Da Lat next year.