Question

（2006全國Ⅱ，9）It was not until she got home ________ Jennifer realized she had lost her keys.

1. A.
   when
2. B.
   that
3. C.
   where
4. D.
   before

Answer 1

B
解析：
句意：直到到了家，珍妮弗才發現鑰匙丟了。在高中英語中not和until只能在兩種情況下緊挨著出現：①強調句型中；
②倒裝句型中。在其他情況一律用not…until…，所以此句還可以改寫為：Jennifer didn't realize she had lost her keys until she got home./Not until she got home did she realize she had lost her keys.