Escribe una oración en el imperfecto Y en el pretérito que demuestra una acción en progreso en el pasado con una interrupción.

The Imperfect Tense and The Preterite Tense are both ways to talk about actions that happened in the past. Learning when to use which is one of the more frustrating things a Spanish student has to do because we just don't think the same way in English. We have only one past tense conjugation and it tells us simply one thing — the action happened in the past.

Explanation:

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