It was 5:00 when they arrived. = (Eran/Fueron) las cinco cuando (llegaban/llegaron).

When I saw those cakes, I was really hungry. = Cuando (veía/vi) esos pasteles, (tenía/tuve) mucha hambre.

Mario was happy when his grandma called him. = Mario (estaba/estuvo) feliz cuando su abuela lo (llamaba/llamó).

When we arrived to the beach, it was really windy. = Cuando (llegábamos/llegamos) a la playa, (hacía/hizo) mucho viento.

I called my friend because I wanted to know what the homework was. = (llamaba/llamé) a mi amigo porque quería saber la tarea.

It was 11:00 when they got up. = (Eran/Fueron) las once cuando se (levantaban/levantaron).

I turned off the T.V. because I was scared. = (apagaba/apagué) la tele porque (tenía/tuve) miedo.

There was (haber) a hurricane last night. (Había/Hubo) un huracán anoche.

The hurricane destroyed a lot. = El huracán (destruía/destruyó) mucho.

There were (haber) a lot of trees in the street. = (Había/Hubo) muchos árboles en la calle.

We were running when Paco fell down. = (Corríamos/Corrimos) cuando Paco se (caía/cayó).