It would be "Diana prefiere que nosotros tragamos la comida para las vacaciones" because you have to conjugate the verb "tragar" for Nosotros, so you would replace the "-AR" ending with "Amos".
One way you can protect the environment is by recycling. Another way is to water your plants at home and at school. You can also clean up your neighborhood and school. Hope this helps! :)
-Hola, Sr. Gómez.
-Hola Paco. ¿Qué hora es?
-Son las nueve de la mañana
Saludos :)
