1) reduce, recycle and reuse a) you should b) you shouldn't 2) Use water-saving appliances. a) you should b) you shouldn't 3) Turn on the lights all day. a) you should b) you shouldn't 4) Plant trees a) you shouldn't b) you should 5) Use plastics bags. a) you should b) you shouldn't 6) Turn off lights and unplug devices when not in use. a) you shouldn't b) you should 7) Walk, bike, or use public transportation instead of driving a)  you should b) you shouldn't 8) Light fires. a) you shouldn't b) you should 9) Throw garbage on the street. a) you should b) you shouldn't 10) Use energy-efficient light bulbs a) you should b) you shouldn't 11) Educate others about the importance of protecting the environment. a) You shouldn't b) You should

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