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谈论环境保护的表达 — 英语填空题

外研社版(主编:孙有中)·英语 Unit 6 Live green AI 三重审校通过

题目
Complete the sentence with the correct word: To live green, our class collects used bottles and paper every Friday and takes them to the recycling centre, so they can be r________ and made into new things instead of being thrown away.