The weather turned out to be fine. I the trouble to carry the umbrella with me.
A. should have taken
B. needn’t have taken
C. mustn’t have taken
D. could have taken
网友回答
A. should have taken
(答案→)B. needn’t have taken
C. mustn’t have taken
D. could have taken
解析：考查情态动词+have done的用法，句意：其实天气很好， 我本来没有必要带伞的，needn’t have done没有必要做某事却做了，A. should have done本应该做某事却没做， must在表示推测的时候，只能用于肯定句mustn’t have done是错误的表达， could have done本可以做却没做，选B。