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11.(2012扬州,13)Wemustdoeverythingwecanourearthcleanerandsafer.A.madeB.tomakingC.makeD.tomake

题目详情

11.  ( 2012 扬州,13) We must do everything we can our earth cleaner and safer.

   A. made   B. to making   

    C. make   D. to make 

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答案和解析
11. D