问题补充：
--- When can I see the doctor, madam?
--- Let me see. Sorry, you your turn, so you will have to wait again.
A. are missing
B. have missed
C. will miss
D. missed
答案：
A. are missing
(答案→)B. have missed
C. will miss
D. missed
解析：句意：夫人，我什么时候能看到医生？——让我看看，抱歉，你错过了轮到你的时机，一次再排队吧！结合语境可知下文描述的是现在已经完成的动作，故用现在完成时态，主语you是第二人称，故助动词用have，选B。
