from her parents, she was left with her two young sisters--aged three and seven.
A. Being separated
B. Having been separated
C. Having separated
D. Had been separated
网友回答
A. Being separated
(答案→)B. Having been separated
C. Having separated
D. Had been separated
解析：考查非谓语动词。Separate 与主语she为动宾关系，与谓语was left为先后关系所以要用现在分词的完成被动式做状语。句意：与父母分离后她和两个三岁和七岁的妹妹在一起。