many times, he finally understood it.
A. Being told
B. Telling
C. Having been told
D. Having told
网友回答
A. Being told
B. Telling
(答案→)C. Having been told
D. Having told
解析：考查分词做状语。本题中的动词tell与句子主语he构成被动关系，故使用可以使用过去分词done的形式，过去分词done=having been done，既表示被动也表示已经完成；句意：已经被多次告知，他最后终于理解了。故C正确。