This question appears to lack completeness. The appropriate action is to revise these sentences using the preterite tense.
Answer:
The proper answers are:
Nosotros jamás cuidamos nuestra nutrición.
Todos llevamos vida de sedentarios.
En agosto mis hermanos y yo resolvimos estar a dieta.
Yo no ví a mis hermanos en dos meses.
En octubre ellos adelgazaron dos libras.
Explanation:
In this context, all verbs are conjugated in a tense known as: pretérito perfecto simple.
This verb tense is used to describe completed actions or events from the past, or to refer to actions that are finished but relatively close or recent regarding the time of communication.
In Spanish, regular verbs can be converted to this simple past tense by modifying their roots as shown:
Amar:
(yo) amé
(tú) amaste
(él) amó
(ns) amamos
(vs) amasteis
(ellos) amaron
Temer:
(yo) temí
(tú) temiste
(él) temió
(ns) temimos
(vs) temisteis
(ellos) temieron
Partir:
(yo) partí
(tú) partiste
(él) partió
(ns) partimos
(vs) partisteis
(ellos) partieron