in a proper way waste can be turned into useful things.A. To deal withB. Dealt withC. Dea

问题补充：

in a proper way, waste can be turned into useful things.

A. To deal with

B. Dealt with

C. Dealing with

D. Being dealt with

答案：

A. To deal with

(答案→)B. Dealt with

C. Dealing with

D. Being dealt with

解析：考察非谓语动词。句意：用恰当的方法处理，废物也能变成有用的东西。过去分析表示被动的发生过的动作，和句子主语是动宾关系。Dealt with的动作对象是waste，故选B。