My favorite pet is a kitten. -Correct

I'd like to take care of it, however my dad doesn't want to.

Correct:I'd like to take care of it although my dad doesn't want to.

** Use "although" to mean "despite the fact that" instead of "however".

One I had a pet, she was so lovely.

Correct: Once I had a pet and she was so lovely.

** Use "once" to mean "one time in the past, but not now" instead of "one".

I am going to persuade my dad.

Correct: I am going to persuade it to my dad.

** Use "it" to mean "the thing, situation, or idea that has already been talked about and to complete your sentence.

** Use "to" to express direction or motion toward someone.

Hello there Aloa,

Thank you for submitting your homework on time. I'm really happy cause in spite of having a lot of homework's from your school you still manage to do this homework. please take note of the correction here cause it will help you on constructing your sentences.. see you again in our class..^_^