Plzz help smart people who know Spanish Use the verb estar to talk about location and condition. 1. Mi cuaderno encima de mi escritorio.
2. Las ventanas al lado de la puerta.
3. Milagros y yo detrás de la puerta.
4. La calculadora dentro de la mochila.

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