快!紧急求助英语题Ithinkhemustberight,___
I think he must be right,________? A.isn't he B.is he .mustn't he D.must he
选a isn't he 陈述部分主句为第一人称,谓语是think, believe, expect, suppose, imagine等引导的定语从句,疑问部分与宾语从句相对应构成反意疑问句。例如:    I don't think he is bright, is he? 我认为他并不聪明,是吗?    We believe she can do it better, can't she? 我们相信她能做得更好,她能吗?