Bit of an evil q for a beginner.
Why is both # 2 and 3 right? Both dos and de is right. I thought only "de" because meus is already plural, and you shouldn't use "dos". Can anyone explain?
The article is optional when there's a possessive pronoun, but it's not wrong. There's no reason why you shouldn't use "dos".
Is "Criancas" a more Pr-Pr phrase?
I wrote "a professora" and got counted wrong.