I don't understand you _______ (make) such great progress in your research,which surprised us all.

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Idon''tunderstandyou_______(make)suchgreatprogressinyourresearch,whichsurprisedusall.Idon''tunderstand

I don't understand you _______ (make) such great progress in your research,which surprised us all.
I don't understand you _______ (make) such great progress in your research,which surprised us all.

I don't understand you _______ (make) such great progress in your research,which surprised us all.
having made