'Dziecko' is neuter, so the plural 'dzieci' requires non-masculine ending of the verb 'zobaczyły'
I have the same question. Do you always have to use the feminine-ending of the verb ,if the subject is neuter ?
it's not necessarily the feminine ending. It's just that -li is the masculine personal ending and -ły is for everything else (masculine animate, masculine inanimate, feminine and neuter)
Well, as "zobaczyć" is a perfective verb, it's impossible to use it in the Present Tense ;)
No, it's easy to use in the infinitive form.
"Musisz zobaczyć ten film!" = "You have to see this movie!"
Mostly because of "they" and "dophin". Those two typos were enough for your answer to be rejected.