Question

Not until he questioned the manager several times ___________ that the engineer-in-chief had gone to an important meeting.  

A．did he tell

B．he told

C．was he told

D．he was told

Answer 1

C

not until 置于句首，部分倒装，要提前be动词、情态动词或者助动词，从句意可知，应用被动，他被告知总工程师已经去参加一个重要会议了。