摘要： - A man answered the phone. I suppose it was her husband. - It her husband. He has been dead for ages. A. mustn't be B. couldn't have beenC. may not have been D. mustn't have been

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--A man answered the phone, I suppose it was her husband.
--It ____ her husband. He has been dead for ages.

A.
mustn't be
B.
mustn't have been
C.
couldn't be
D.
couldn't have been

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- A man answered the phone. I suppose it was her husband.
- It ___ her husband. He has been dead for ages.
A. mustn't be B. couldn't have been C. may not have been D. mustn't have been

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--A man answered the phone, I suppose it was her husband.

--It ____ her husband. He has been dead for ages.

[　　]

—A man answered the phone. I suppose it was her husband.

—It ________ her husband．He has been dead for ages.

A．mustn’t be