I don’t know the problem.A. how deal withB. how to deal withC. what to deal withD. what d

问题补充：

I don’t know the problem.

A. how deal with

B. how to deal with

C. what to deal with

D. what do with

答案：

A. how deal with

(答案→)B. how to deal with

C. what to deal with

D. what do with

解析：句意：我不知道如何处理这个问题。deal with表示处理，与how连用，do with与what连用，同时疑问词+不定式，可以等效为宾语从句，故选B