单选题Not until ________ her&nb

问题补充：

单选题Notuntil________herdarkglasses___________shewasafamousfilmstar.A.did she take off, I realizedB.she took off, did I realizeC.did she take off, did I realizeD.she took off, I realized

答案：

B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。