many times he still couldn’t understand it．A. ToldB. Having been toldC. He was toldD. T

问题补充：

many times , he still couldn’t understand it．

A. Told

B. Having been told

C. He was told

D. Though he had been told

答案：

A. Told

(答案→)B. Having been told

C. He was told

D. Though he had been told

解析：考察非谓语动词.句意:已经被告诉了多次,他仍旧不能理解它.现在分词表示正在进行的伴随性动作,和句子主语是主谓关系,结合语境可知选B.