Hace dos anos yo no (poder) nadar pero ahora puedo. a. puedo b. podia c. pude d. pueda

Can someone me with these questions ?

Which sentence contains a completed action? when i was a child there was a fair in my town every year. i won a prize at the fair last year.

Translate the phrase by finding the infinitive and conjugating it to match the subject. we walk. → nosotros he plays the guitar. → él la guitarra. you answer. → tú i skate. →yo