Which verb form correctly completes this sentence?

Cuando era pequeño yo ________ en los Estados Unidos.
vivo
vivían
vivíamos
vivía

Respuesta :

vivia.  You are looking for the imperfect tense.  Since it was in the past, and in the yo form, vivia is the correct answer (Mind my accents, please)
The answer would be, D. Vivía.

There you go!