Why is sprzątałam not ok?
It's a starred answer, it should have been accepted.
Unless perhaps you mixed masculine "znalazłem" and feminine "sprzątałam", such an answer wouldn't make sense.
Thanks, that clarifies things. Maybe I mixed up the genders, as you suggested.
I'm not quite sure I understand why it is 'twój' here, but oh well.
Why not? It's 'your room', after all.
"sprzątać" takes Accusative, "pokój" is masculine inanimate, the right form is "twój".
Ok, but I was thinking that if it's the object of the sentence i.e. 'the room' which is being cleaned, and that then takes the Accusative, then surely the word 'your' must also take the Accusative, so I wrote 'twojego'.
The logic is correct, but "twojego" is not the only Accusative masculine option. It's used for animate nouns, which is not the case here.
I see. I didn't know this. Interesting. Thanks.
Znalazłam nóż, gdy sprzątałam w twoim pokoju.
I think this should be accepted.
Seems close enough, added.
Thank you for helping me all the time.
"Znalazłem nóż sprzątając twój pokój"? Some of the sentences in the lesson on participles and gerunds have similar translations.