many times, my elderly mother still can’t remember how to light the gas.
A. Had told
B. Having told
C. Having been told
D. Being told
网友回答
A. Had told
B. Having told
(答案→)C. Having been told
D. Being told
解析：考查现在分词的完成式做状语：句意：被告知很多次后，我年迈的妈妈还是不知道怎么关煤气。可知妈妈是先被告知了很多次，然后才不记得的，也就是说，做状语的动词先于主干句的动作，用现在分词的完成式做状语，还要用被动式。选C。