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

答案及解析： B

情态动词常涉及说话人对所说内容的态度，使用频率较高，也成为历年高考英语命题中不曾缺少的考查内容。理解题干内容是做出正确判断选择的前提。本题涉及说话人对对方的态度，题干中要求选用表达说话人认为是一种“不应该”或“不可取”的行为，应该用shouldn’t have left。You shouldn’t have left home without a word．(Actually you did．I think it was an undesirableaction．)