Question

90._____ his father came back from work_____ his homework.

90._____ his father came back from work_____ his homework.
　　A.Not until; he did 　　　　　　　　B.It wasn't until; when he did
　　C.It was until; that he didn't do 　D.It wasn't until; that he did
为什么

Answer 1

选D，知道他父亲回来，他才做功课。
考察的是it is not until…that的用法
如果A的选项是NOT UNTIL, DID HE也可以选，后面用倒装。

Answer 2

D.It wasn't until; that he did
建议搜索until的用法

Answer 3

D not until /状语从句