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obligations

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  • You _____ (should/ shouldn’t) waste paper if you don’t need to print.
    shouldn’t
  • Governments ________ (must/mustn't) take action to fight climate change.
    must
  • People ________(must/mustn't) stop cutting down so many trees.
    must
  • We ________(should/should not) recycle plastic bottles to reduce waste.
    should
  • You ________ (have to/ don't have to) separate your garbage for proper recycling.
    have to
  • We ______(must/mustn’t) harm endangered animals.
    mustn't
  • Tourists _____ (must/mustn't) leave trash in national parks.
    mustn't
  • Students ________ (should/shouldn't) learn about global warming in school.
    should
  • We ________ (should/shouldn't)use less water when brushing our teeth.
    should
  • Factories ______ (have to/ don’t have to) use fossil fuels; they can use renewable energy.
    don’t have to
  • We _____ ( should/shouldn’t) leave the tap running while washing dishes.
    shouldn’t
  • People _____(should/shouldn’t) ignore climate change.
    shouldn’t
  • Factories ________(have to /don't have to) follow environmental regulations by law.
    have to
  • Everyone ________(should/shouldn't) do their part to protect the Earth.
    should
  • You ______(have to/don’t have to) use your car every day – try walking or biking.
    don’t have to
  • You ________(should/should not) turn off the lights when you leave the room.
    should
  • You ______(must/mustn’t) dump chemicals into rivers.
    mustn’t
  • He ______(have to/doesn’t have to) throw away food – he can compost it.
    doesn’t have to
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