1) We ............................ hunt wild animals for their fur. a) should b) shouldn't 2) We ............................ feed stray animals because they also deserve to live. a) should b) shouldn't 3) People ............................ cut down the trees because it causes deforestation. a) should b) shouldn't 4) You ............................ study a lot to be successful. a) should b) shouldn't 5) We ............................ protect the environment because we live in it. a) should b) shouldn't 6) People ............................ recycle glass, paper, and metal to reduce pollution. a) should b) shouldn't 7) People ............................ use renewable energy resources such as wind and solar energy. a) should b) shouldn't 8) We ............................ plant more trees because they produce oxygen. a) should b) shouldn't 9) We ............................ hunt animals because some animals are endangered. We ............................ take precautions. a) should / should b) shouldn't / shouldn't c) should / shouldn't d) shouldn't / should 10) People ............................ litter (throw rubbish on the streets). a) should b) shouldn't 11) We ............................ pollute the air, water, and sea. a) should b) shouldn't 12) We ............................ stop global warming. a) should b) shouldn't 13) We ............................ damage the habitats of animals. a) should b) shouldn't 14) People ............................ protect the environment and balance of nature. a) should b) shouldn't 15) We ............................ use reusable bags and materials to ............................ environmental pollution. a) should / increase b) shouldn't / reduce c) should / reduce d) shouldn't / increase

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