"Are you painting the windows?"

Translation: Fested az ablakokat?

[sgtwickool]

Ok, I'm not getting this. Why is "Festesz az ablakokat?" not accepted? I don't understand when the -d suffix should be used. Could somebody help, please? Thanks!!

[Martybet]

It's because 'THE' window is a definite object, whereas 'A' window is an indefinite object.
festesz egy ablakat / fested az ablakat

[cosmo-pedant]

Ohhh! It is the definite conjugation of the verb (2d/S).

[vytah]

Would "Az ablakokat fested?" be fine?

[Stuttgart3]

Yes, it's also correct. but the meaning is else:

What are you doing? Are you painting the windows? = Mit csinálsz? Fested az ablakokat? - It emphasizes 'fested'.

What are you painting? Are the windows being painted (by you)? = Mit festesz? Az ablakokat fested? - It emphasizes 'az ablakokat'.

[igorjales]

And why not “te fested az ablakokat”?

[RyagonIV]

Sure. That works, too.

[ElmirZammer]

This is crazy: I wrote "Fested az ablakokat" and appeared that was wrong and the correct answer should be: "Fested az ablakokat" - exactly my answer. So ...this is really crazy