问题
选择题
It was Mr. Zhang that helped us out of the trouble. Without his help, we ______ it so easily.
A．can’t manage
B．mustn’t have managed
C．couldn’t have managed
D．couldn’t manage
答案
答案：C
题目分析：考查虚拟语气。虚拟语气分为if引导的虚拟条件句，含蓄条件句和混合虚拟语气。without没有，后跟含蓄条件句，相当于if it was not for...。根据helped可知，是发生过的事情，对过去虚拟，主句用would/could/should have done。故选C。