Mary ________ something not suitable for the occasion, but she was at least trying to be of some help to you．


  1. A.
    may have done
  2. B.
    should have done
  3. C.
    should say
  4. D.
    would do
A
may/might have done sth表示對過去發(fā)生的事情的肯定的猜測，意為“過去可能發(fā)生了某件事”。
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