()4.Wemustdoeverythingwecanour.earthcleanerandsafer.A.madeB.tomakingC.makeD.tomake

Question

(   ) 4. We must do everything we can           our . earth cleaner and safer.

A. made     B. to making

C. make     D. to make

Answer 1

4.D根据句意“我们必须尽力使我们的地球更干净、更安全。”可知要用动词不定式作目的状

语。