A-A+
Not until I shouted at the top of my voice ___
问题详情
Not until I shouted at the top of my voice ______ the danger.
A) did he notice B) had he noticed C) that he noticed D) he didn't notice
参考答案
A此题含义为：直到我尽力高声喊叫时他才意识到危险。当否定词not放在句首时主谓要倒装。从句中谓语动词shouted是过去时，那主句中谓语动词也须得用过去时相呼应。
