You ______ the examination again since you had already passed it.
A、needn’t have taken
B、didn’t need to take
C、needn’t take
D、mustn’t take
【正确答案】：B
【题目解析】：needn't have done sth. 与shouldn't have done sth. ，can't /couldn't have done sth. mustn't have done sth. 等等情态动词+have done sth.一样，讲的都是过去的，已经发生过了的事，分别表示“本不必做某事， 本不该做某事；不可能做过某事，一定做过某事”
此题题意为你没有必要再参加这次考试了。所以选B didn't need to do sth不需要做某事
