Somethinghastobedonetostopourriversfrombeingpolluted,________?A.doesn#39;titB.hasn#39;titC.doesitD.haven#39;ttheyItisinteresttoobserve_________commonwordshavefoundtheirwayintothelanguagefromthenamesof

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问题：Somethinghastobedonetostopourriversfrombeingpolluted,________?A.doesn#39;titB.hasn#39;titC.doesitD.haven#39;ttheyItisinteresttoobserve_________commonwordshavefoundtheirwayintothelanguagefromthenamesofpeople.(好像有点麽

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Somethinghastobedonetostopourriversfrombeingpolluted,?A.doesn#39;titB.hasn#39;titC.doesitD.haven#39;ttheyItisinteresttoobserve_commonwordshavefoundtheirwayintothelanguagefromthenamesof

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