题目内容
I got up early that morning, but I _____ so because I had no work to do.
A. mustn’t have done B. didn’t need to do C. needn’t have done D. can’t have done
C
解析:
needn’t have done表示“过去不必做而做了某事”,若表示“不必做某事(且实际上未做)”则用“didn’t / don’t / doesn’t need to.”
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