The two elderly sisters, so long, held each other.
A. being separated
B. having been separated
C. to be separated
D. had been separated
网友回答
A. being separated
(答案→)B. having been separated
C. to be separated
D. had been separated
解析：考查非谓语动词做状语。根据句意可知是已经分隔很久了。根据句子结构可知D错误，可以在had前面加who。A项是正在被隔开，C项是将要被隔开。句意：那两个分离多年的老姐妹紧紧地相拥在一起。