Arun had drunk some water. Change into passive voice.
ASome water have been drunk by Arun.
BSome water has drunk by Arun.
CSome water had been drunk by Arun.
DSome water has been drunk by Arun.
ASome water have been drunk by Arun.
BSome water has drunk by Arun.
CSome water had been drunk by Arun.
DSome water has been drunk by Arun.
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