Not until , .
A. did she take off, I realized
B. she took off, did I realize
C. did she take off, did I realize
D. she took off, I realized
网友回答
A. did she take off, I realized
(答案→)B. she took off, did I realize
C. did she take off, did I realize
D. she took off, I realized
解析:句意:直到她摘下墨镜,我才意识到她是一位著名的电影明星。Not until引导的状语从句位于句首时,主句部分需部分倒装。