What is the plural form of each singular article and noun and the singular form of each plural article and noun. = unas fotografías
= un día
= un cuaderno
= unos pasajeros
= una computadora
= unas escuelas
= unos videos
= un programa
= unos autobuses
= una palabra

1. Una fotografia

2. Unos dias

3. Unos cuadernos

4. Un pasajero

5. Unas computadoras

6. Una escuela

7. Un video

8. Unos programas

9. Un autobús

10. Unas palabras

Explanation: I hope this helps.

Explanation:

___una fotografía__ = unas fotografías

_ unos días = un día

__ unos cuadernos___ = un cuaderno

__ un pasajero___ = unos pasajeros

__ unas computadoras ___ = una computadora

__ una escuela___ = unas escuelas

__ un vídeo___ = unos videos

__ unos programas ___ = un programa

__ un autobús ___ = unos autobuses

__ unas palabras ___ = una palabra

probably orange juice since in a restaurant they give you a drink first.

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