No sooner ____ finished my work ____ the boss come.

题目

No sooner ____ finished my work ____ the boss come.
A.had I,when B.I had,when C.had I,than D.I had,when

答案

选C
no sooner ……than ……
意思是：一……就……
句子的意思是 我一完成工作老板就来了
类似的短语还有
hardly ...when
意思为:"还没...就..."
Hardly had I finished my work when the boss came.
我还没完成工作老板就来了