1. —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
【解析】选C。由语境可知，“未告诉”这一动作发生在“未参加会议”这一过去时间之前，即过去的过去，排除B、D两项；about为介词，后应用-ing形式。故选C。
