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？
A
I think he must be right,________? A.isn't he B.is he C.mustn't he D.must he A is riht. 这是考查表推测句型的反意疑问句.其他例句： He must have known it from my sister，hasn‘t he？ He must have bought it yesterday， didn’t he？ ----对过去情况的推测句型的反意疑问句： 有时间状语用didn’t...？/wasn't...?/weren't...? 有时间状语用haven't...?/hasn't...?
答："I have explained (explain)this to you several times already."said the teacher."...详情>>
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