It was not she took off the glasses I realized she was a famous film star.A. when; thatB.

问题补充：

It was not she took off the glasses I realized she was a famous film star.

A. when; that

B. until; that

C. until; when

D. when; until

答案：

A. when; that

(答案→)B. until; that

C. until; when

D. when; until

解析：not…until…句型的强调句：It is/was not until +被强调部分+that+其他成分。所强调的可以是单词、短语，也可以是从句，但结构必须完整。本题大意，直到她摘掉墨镜我才意识到她是一个著名的电影明星。故B正确。