—I saw Jim at the meeting yesterday?
   —Did you? I think he     have attended, for he is an expert.
  A. needn’t       B. mustn’t      C. shouldn’t      D. couldn’t

--I saw Jim at the meeting yesterday.

--Did you? I think he _____ have attended, for he is an expert.

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A．needn't　　　　B．mustn't

C．shouldn't　　　D．couldn't

---- I saw Jim at the meeting yesterday.

　 ---- Did you? I think he ______ have attended, for he is an expert.

A. needn’t　　　 　B. mustn’t　　　　 C. shouldn’t　　　　 D. couldn’t

I saw Jim at the meeting yesterday．

Did you？It think he ________have attended，for he is an expert．

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