Why is "Tak, widzimy ten psa" not good? It says tego is the right word instead of ten.
you need accusative after widzimy, pies is animated , and has Accusative=Genitive psa, so you use Accusative=Genitive tego
Can someone explain to me "accusative" and "genetive"
It's a very wide topic, so I'd advise taking a look here and looking for posts about cases: https://www.duolingo.com/comment/16296174
Really helpful. Dziękuję.