Filing of ITR 1 ?

I have filed a return for an individual in F.Y 18-19 ,under tax audit . For the F.Y 19-20 no individual return was filed for the same person. But i have to file return for F.Y 20-21 in ITR 1 as the person has salary income and no business income . Can i fill ITR 1 or have to file ITR 3 along with tax audit?