Cuando yo era pequeña, mi mama tenia muchas peliculas en su casa. A mi mama solo me gusta mirar peliculas de amor. Yo prefiero ver historias de principes y princesas. Un dia mi papa llego a casa con una pelicula de guerra. Mi hermano Julio esta contento. El siempre quiere ver peliculas de accion o de guerra. Esa noche, Julio, Papa y yo miramos la pelicula.
Past tense can either be imperfect or preterite. Common indicators for imperfect tense are: "was", "were", ongoing/continuous events, "always", "never", emotions, "-ing", etc. The most common indicator for preterite tense is the mention of a specific occasion, event, or time. My explanations for each answer are listed down below.
You used to be a child = imperfect (was, were, continuous, etc.)
She only likedwatching = imperfect (-ing)
I used prefer watching = imperfect (-ing)
One day, he arrived = preterite (a particular occasion)
He was happy = imperfect (was + emotions)
He always wanted to see = imperfect (always/never)
That night, we watched = preterite (a particular occasion)
I really hope this helps you. Have an awesome day.