Es importante que túun gran dentisa

Which answer best completes this dialogue? sr. gómez. —hola paco. ? qué hora es? —son las nueve de la ma? ana.

My spanish teacher said this to me.. look at the ending on your verb. you need to make it agree with "yo" this is my sentence- sí yo estudiar español en la escuela how do i make it agree with "yo"

Is anyone able to ? i am so confused. this sheet is about irregular preterit verbs and direct object pronouns in spanish.