题目内容

---He is not a friend of yours, is he?

---________. I have never seen him before.


  1. A.
    No, he isn't
  2. B.
    Yes, he isn't
  3. C.
    No, he is
  4. D.
    Yes, he is
A
从语法上看,此题选A和D都可以。但根据句子下文那句话的意思,我们能确定答案为A。
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