You______ all those calculations! We have a computer to do all that sort of thing.A.wouldn

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You______ all those calculations! We have a computer to do all that sort of thing.

A.wouldn"t have done

B.mustn"t have done

C.needn"t have done

D.hadn"t done

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热搜:关于氨基酸代谢错误的论述是_________。

答案解析

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  • 正确答案:C
    wouldn’thavedone是虚拟形式;mustn’thavedone实际上不存在这种用法,表示对过去情况的否定推测用couldn’thavedone;needn’thavedone表示做了不必做的事,符合句意;hadn’tdone是过去完成时形式。