【题目】______ many times, but he still didn’t know how to do it.
A. He had been told B. Having been told
C. Though he had been told D. Having told
在线课程【答案】A
【解析】
考查句子结构。句意：告诉他许多次了，但是他仍旧不知道如何做它。后半部分有连词but，故空格处是不带连词的句子，根据句意，“告诉”这一动作发生在“知道”之前，表示“过去的过去”发生的动作，用过去完成时，故选A。