The book must have been translated into English three years

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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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再问：答案选C 孩子 = =‘
再答： sorry 我看错了 three years ago过去时的标志因此用wasn't反问 = = 不好意思

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