—We didn’t find Smith attending the lecture.
—No one him about a lecture the following day.
A. had told, there to be
B. told, there was
C. had told, there being
D. told, there to be
网友回答
A. had told, there to be
B. told, there was
(答案→)C. had told, there being
D. told, there to be
解析：由语义环境可知，“未告诉”这一动作发生在“未参加会议”这一过去时间之前，排除B.D两项；about为介词，后应用-ing形式。故选C