Los colombianos (9. daban/ dieron) el nombre de "El Dorado" al aeropuerto
internacional de la capital. Despues de mi visita del museo del oro, (10. caminaba
| caminé) por el centro de la capital. Todos los días (11. comia / comi) arepas y
todos los platillos tipicos de colombia. Gracias a este viaje, (12. sabia / supe) que
Bogotá es una ciudad muy moderna y con mucha historia.
Imperfecto. Pretérito

9. daban / dieron

10. caminaba / caminé

11. comía / comí

12. sabía / supe

9. Dieron.

10. Caminé.

11.Comí.

12. Supe.

Explanation:

The imperfect past tense is one that indicates actions that have been performed in the past tense, therefore following the instructions we must conjugate the verbs within the text at this time, it is important to identify the narrator, number and gender in order to logically conjugate them within the Prayer and that they agree with what is being expressed.

corras is the only one that is informal but doesn't follow the suffix rule. correr is the verb. corre is the formal verb form. corra would be used as the formal is corre ended with an a.

your best bet would be corras, it's the only one that is informal but is still wrong