You （） all those calculations! We have a computer to do that sort of thing.<br>Aneedn.t have done<br>Bmust not have done<br>Cshouldn.t have done<br>Dcan not have done

You （） all those calculations! We have a computer to do that sort of thing.
Aneedn.t have done
Bmust not have done
Cshouldn.t have done
Dcan not have done

出自：湖北师范大学大学英语

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