Question

Not until he failed in the last examination _________ he should have spent more time on study. ...

Not until he failed in the last examination _________ he should have spent more time on study. A．did he realize B．he realized C．did he not realize D．he didn’t realize

Answer 1

A

试题分析：考查倒装句：句意：直到他在最后一次考试中失利，他才意识到他应该在学习上多花些时间。Not until引导时间状语从句置于句首，后面的主句用部分倒装，以前前面是not until，后面是肯定句，选A。