题目内容

--Must I renew the book now?

--No, you ________. You ________ that yesterday.


  1. A.
    mustn't; should do
  2. B.
    needn't; should have done
  3. C.
    may not; should do
  4. D.
    can't; should have done
D
你本该昨天还书,但没还,所以现在不能续借。
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