The use of fossil fuels should end in the next 10 years., Low density housing is better for urban residents. , Online learning is more effective than learning in a classroom. , Mobile phones should be banned in schools (primary schools and high schools, not universities)., Growing genetically modified food is the best choice for developing agriculture., To prevent food shortages in the future it is necessary for humans to eat insects., Fast food and junk food should not be sold in schools. .

Practice using concession and refutation

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