They might as well use free google translate website but i doubt it ll be correct sentence.
Just fill it in any way you want; if they don't like your grammar, they are perfectly welcome to correct it.
you are surprised that they require you to fill out the form in Polish?
Given that when Poles move overseas, they clearly want the option of Polish language forms to fill in, why shouldn't Poles extend the same option to foreigners in Poland?
maybe they require you to have a basic grasp of Polish before they allow you to reside there,
a) No they don't.
b) They couldn't legal require that from foreigners anyway.