"You have bought this already!"

Translation: Już to kupiliście!

[roman_f1]

"Kupiłeś już to!" - why not?

[Jellei]

OK, added.

[MarthaLoda]

Why does "Pani już to kupiła" count as wrong?

[Jellei]

Unfortunately the course lacks the formal versions in a very big number of sentences. They were not provided at the beginning, and to add them everywhere now would be very hard and time-consuming. Of course we add them when requested. So added.

[MarthaLoda]

This one appeared in the "Formal you" section, that's why I was surprised it didn't work.

[Jellei]

Oh. That's bad. But it's actually a sentence from "Verbs: Past Perfect", so this is one of the times when the algorithm randomly shows you some old sentence.

[CaroMaless]

Same in the German course. Pure guesswork which translation to choose for the English "you".

[alik1989]

No guesswork required, as all nine versions of you are accepted. I can't speak for the German course, though.

[JoanieKatz]

Please? Can't I put the object 'to' at the end?

[Jellei]

Pronouns at the end rarely are natural. Not here for sure.

"You have bought THIS again!"

[CaroMaless]

In my opinion ... if you want to emphasize the person, you can also say "Ty już tego kupiłeś/-aś". It counted as wrong though.

[alik1989]

It's indeed wrong. Kupić requires the accusative, but tego is genitive.