题目内容

“Would you like to go swimming with me this afternoon?”

“I'd love to. But I'm afraid I ________. I have too much work to do.”


  1. A.
    can't
  2. B.
    mustn't
  3. C.
    needn't
  4. D.
    may not
A
(I'm afraid I can't.意为“恐怕我不能”.mustn't意为“不准,不许”,needn't意为“不必”,may not意为“也许不”.根据句意,答案为A.)
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