问题
选择题
It was ______ back home after the experiment.
A． not until midnight did he go
B． until midnight that he didn’t go
C． not until midnight that he went
D． until midnight when he didn’t go
答案
答案：C
本题考查的是含有not until 的强调句型，其结构为：It is/was + not until +被强调部分+ that +其他成分。符合此结构的只有C选项。