¿Cuándo juegan?
This means when do they play. Putting ellos in the sentence is not necessary.
What is the text in which his poetry adopts a social, ethical and political intention?
that is the translation if that helps you at all :)
Answer:
Con quien fuiste?
A donde fuisteis?
Elsa que perdió?
Quien pasa el tiempo jugando el la arena?
Tus amigos que vieron cuando bucearon?
Explanation:
Ellos iban a la escuela
Here the imperfect tense is iban which means were going
El dormía tarde ayer
Here the imperfect tense is dormía which means slept
Nosotros hablábamos por teléfono
Here the imperfect tense is hablábamos which means we were talking
Ellas iban al centro comercial
Here the imperfect tense is iban which means were going