Question

I wrote a letter to John for his help during my high school years. without which I  the college entrance exam.

A． would fail

B．would have failed

C．should fail

D．must have failed

Answer 1

B

试题分析：考查虚拟语气。本题考查了含蓄的虚拟语气，该条件是通过介词without要不是…；如果没有…来表现出来的。根据wrote说明本句是与过去事实相反的虚拟语气，故使用“情态动词+have done”的结构来表示与过去事实相反的虚拟语气。故B正确。
点评：本题考查了含蓄条件句，该条件通过介词without（要不是…，如果没有…），且是与过去事实相反的虚拟语气，使用“情态动词+have done”的形式。