He has always insisted on Mr. Berg instead of Justin.
A. been called
B. called
C. calling
D. being called
网友回答
A. been called
B. called
C. calling
D. being called
解析：
试题分析：考查固定词组。固定词组insist on doing sth坚持要求做某事。句意：他总是坚持被成为Mr Berg,而表示Justin。根据句意说明使用被动语态。故D正确。