So is "bierzesz" a verb that takes a genitive object, then? What would "why are you not taking the bags?" be?

Edit: Nevermind, just remembered the negative-genitive rule.

I believe "Why do you not take a bag" should be an appropiate answer :)

Also why you don't take a bag should work?

Looks good but says not

What's the difference between a purse and a handbag?

In the hints for "torby", it says both bag and handbag, but handbag is not an accepted answer ("You used the wrong word"). The Cambridge Dictionary translates handbag to "torebka", so I am guessing that "torba" is bigger than a handbag?