翻译!填空!这有助于我们懂得公正的观念.It helps us ____ ____ the idea of ____.每个人都应该参与保护环境的干净和整洁。Everyone should _____ _____ _____ ＿＿＿ keeping the environment clean and tidy．
问题描述：
翻译!填空!
这有助于我们懂得公正的观念.
It helps us ____ ____ the idea of ____.
每个人都应该参与保护环境的干净和整洁。
Everyone should _____ _____ _____ ＿＿＿ keeping the environment clean and tidy．
答