Question

It was not 　　    he took off his dark glasses 　　    I realized he was a famous singer

1. A.
   when; that
2. B.
   until; that
3. C.
   until; when
4. D.
   when; then

Answer 1

B
试题分析：句意：正是直到他摘下他的墨镜我才意识到他是一个著名的歌星。not......until......直到......才.......; . 强调句的结构：It was +被强调的内容+that+剩余内容；第一空not until he took off his dark glasses是被强调的内容，第二空用that来引导剩余内容。故选B。
考点：考查强调句的用法。