Respuesta :

infinitives ending with -ar will be conjugated with
ó
aste
é
amos
aron

infinitives ending with -er or -ir will be conjugated with
í
iste
io
imos
ieron

1. estudiaron
2. fue
3. tocaron
4.pedía
5.escuchabas
6.era, jugamos
7.vivíamos
8.veía
Now these are my answers without no indication of preterito simple (simple preterit) o imperfecto (imperfect preterit) a preterit is refers to the past.