知识问答
最佳答案：In our daily life environment,can finally see casually discarded plastic bag to
最佳答案：a group supposed to be raise with good habits and behaviours, are acting the opp
最佳答案：For a student ,we all know that wild animals are people's friends and they are v
最佳答案：Saving the EarthNow there has so many foolish action which human being had done.
最佳答案：1maintenance of school environmental health is our duty2, no spitting no litteri
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