I don’t know the problem.
A. how deal with
B. how to deal with
C. what to deal with
D. what do with
网友回答
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