---Who were those people with the flags?
---A group itself the League of Peace.
A. calls
B. calling
C. called
D. being called
网友回答
A. calls
(答案→)B. calling
C. called
D. being called
解析：考查非谓语动词。句中calling itself the League of Peace.作定语，修饰名词group，与group之间为主动关系，为“自称”之意，故选B。