问题
选择题
Not until________,_________.
A．did she take off, I realized
B．she took o
ff, did I realize
C．did she take off, did I realize
D．she took off, I realized
答案
答案：B
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。