1) We ......... use transportation and our bicycles. a) should b) shouldn't 2) We ........ throw chemical gases into the nature. a) should b) shouldn't 3) We ....... plant tree. a) shouldn't b) should 4) We ........ use more natural gas instead of fossil gas and coal. a) should b) shouldn't 5) We ......... use more solar panels . a) shouldn't b) should 6) We ....... use filters for factory. a) should b) shouldn't 7) We ..... use nature friendly products. a) shouldn't b) should 8) We ....... smoke. a) shouldn't b) should 9) We ........ do more recycling. a) should b) shouldn't 10) We ....... warn people who smokes. a) should b) shouldn't

Air Pollution

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