I really don’t knownext step.A. how to doB. how to do withC. what to doD. what to deal wit

问题补充：

I really don’t knownext step.

A. how to do

B. how to do with

C. what to do

D. what to deal with it

答案：

A. how to do

B. how to do with

(答案→)C. what to do

D. what to deal with it

解析：A项中及物动词do缺宾语，B项中with也缺宾语，D项中疑问词how与deal with连用。