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Help with 3 Spanish question:

Conjugate the verb below in the correct form of the imperfect tense:
saltar (yo)

saltaba
salté
saltar
saltía

Conjugate the verb below in the correct form of the imperfect tense:
coleccionar (ellos)

coleccionaba
coleccionar
coleccionía
coleccionaban

Conjugate the verb below in the correct form of the imperfect tense:
coleccionar (ellos)

coleccionaban
coleccionar
coleccionaba
coleccionía