1) We ....... recycle paper, metal, plastic and glass. a) Should b) Shouldn't 2) We ....... turn off the lights. a) Shouldn't b) Should 3) We ....... harm animals. a) Shouldn't b) Should 4) We should use ..... water. a) Less b) More 5) We shouldn't ........ the environment. a) Damage b) Save c) Protect d) Reduce 6) We shouldn't ....... water and energy. a) Use b) Harm c) Drink d) Waste 7) We should ....... a tree. a) Damage b) Cut down c) Plant d) Buy 8) Don't throw ....... araound. a) Plant b) Rubbish c) Water d) Litter 9) Don't forget to ....... the tv. a) Plug b) Unplug c) Open d) Break 10) We should .......... the use of electricity. a) Reduce b) Waste c) Cut down d) Recycle 11) We should ......... water pollution. a) Harm b) Help c) Stop d) Want  12) ....... pollution. a) Noise b) Air c) Soil d) water 13) ....... pollution. a) Noise b) Soil c) Air d) Water 14) ........ pollution. a) Air b) Soil c) Noise d) Water 15) Use ........ to reduce air pollution. a) Truck b) Public transportation c) Car d) Chemicals 16) ............ to save your world. a) Recycle the batteries b) Harm animals c) Cut down a tree d) Throw rubbish around 17) Throw your garbage into the ...... a) Water b) Car c) Bin d) Garden

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