The well-known singer insisted on his private affairs in the press conference.
A. not to discuss
B. discussing not
C. not discussing
D. not having discussed
网友回答
A. not to discuss
B. discussing not
(答案→)C. not discussing
D. not having discussed
解析：insisted on后接动词—ing形式，且不存在时间上的先后顺序，故用一般时，动名词的否定式在其前加not，故选C。