The book must have been translated into English three years ago,_.

The book must have been translated into English three years ago,_.

题目
The book must have been translated into English three years ago,_.
A.mustn't it B.didn't it C.wasn't it D.hasn't it
请说明原因
答案
D
must have been(must表示猜测)
have been才是book的真正谓语 反义疑问句是对谓语进行提问 book是单三 反义疑问句就用has 且主句是肯定猜测 所以反义疑问句就得 用否定提问 因此答案是hasn't it
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