I don’t know such a difficult matter.A. how to do withB. what to deal withC. how dealing

问题补充：

I don’t know such a difficult matter.

A. how to do with

B. what to deal with

C. how dealing with

D. how to deal with

答案：

A. how to do with

B. what to deal with

C. how dealing with

(答案→)D. how to deal with

解析：考查动词短语do with 和deal with的用法区别。