题目内容
5．We all know takingcare of the environment is our duty．分析 我们都知道保护环境是我们的职责．
解答 答案：care．
根据environment 环境，our duty我们的职责，再根据taking …of联想到take care of 表示"照顾、保护"，take care of the environment 表示保护环境，故答案是care．
点评 根据常识，这里是表达保护环境，这里是take care of表示保护，还可以用动词protect．
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