many times he still couldn’t understand itA. ToldB. Having been toldC. Having toldD. H

问题补充：

many times , he still couldn’t understand it．

A. Told

B. Having been told

C. Having told

D. He had been told

答案：

A. Told

(答案→)B. Having been told

C. Having told

D. He had been told

解析：考查分词用法。He与tell之间构成被动关系，而且多次被告诉是已经发生的事情，所以B正确。B选项更强调已经完成，A选项更多强调被动。根据下文的still可知这里应该强调已经完成。句意：已经被多次告知，但是他仍然不能理解。