I was really anxious about you. You home without a word.
A. mustn’t leave
B. shouldn’t have left
C. couldn’t have left
D. needn’t leave
网友回答
A. mustn’t leave
(答案→)B. shouldn’t have left
C. couldn’t have left
D. needn’t leave
解析：从题意分析，对方没有打招呼就去了，造成的结果是I was really anxious,故B表示过去不应不打招呼就走。