During the 1960s, songs about winter by many famous rock groups were popular among people of different ages.
A. released
B. being released
C. releasing
D. having been released
网友回答
(答案→)A. released
B. being released
C. releasing
D. having been released
解析：songs与release之间是被动关系，being released表示正在被发行，不符合语境；having been released一般不做定语，故选A。