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

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
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

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
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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答案C
这本书3年前一定被翻译成了英语。 把“一定”去掉
变成 The book was translated ... , 反义疑问句是 wasn't it..