It was not until he got to the office________ he remembered_____ the key home.
A.when; leaving B.when;to leave
C.that ; leaving D.that;to leave
怎么做呀？请帮我一下
不胜感激

答案选C
这个句子考察强调句型it+is(was)+被强调部分+that+句子剩余部分
强调句型有几个特别的地方要注意：
（1）不能强调句子的谓语
（2）that不能省略，如果强调主语that和 who可以换用
（3）not...until句型的强调，要把not until放在一起一起强调，例如：
it was not until 9:00pm that he left
remember doing sth 记的以前做过某事（指事情已经做过）
remember to do sth 记得要去做某事（指事情还没有做）
所以这个句子：It was not until he got to the office that he rememberer leaving his key home.直到他到了办公室才记起他把钥匙落在家里了