The two old sisters, so long, held each other and burst into tears.
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。分词的动作发生在谓语动词之前,且表示被动关系,所以要使用现在完成时的被动式。因此选B 。