"You are writing a book."
Translation:Wy piszecie książkę.
It is telling me the correct answer is Wy piszesz ksiazke (sorry don't have my Polish keyboard) It does not have Wy as a word
But "Wy piszesz książkę" is not a correct sentence. And it's not among the accepted answers (I checked if someone maybe made a mistake).
It has to be either "[Ty/] piszesz książkę" (singular you) or "[Wy/] piszecie książkę" (plural you).
Wy piszecie książkę. was correct answer, however, Wy was not one of the preset choices.