Question

(长沙市2006)

--- When did your father come back last night?

--- He didn't come back ________ he finished all the work.

[　　]

A．until

B．while

C．if

Answer 1

答案：A
解析：

解析：not... until...表示“直到……才……”，为固定搭配。句意为：你父亲昨晚什么时候回来的？他直到完成所有的工作才回来。