Final answer:
The verb in the correct tense to complete the sentence is 'íbamos'.
Step-by-step explanation:
The verb in the correct tense to complete the sentence is íbamos. In the sentence, the subject is 'mandos' which is the first-person plural form of the verb 'ir' (to go) in the imperfect past tense. 'Íbamos' is the correct conjugation of 'ir' for the subject 'mandos' in the imperfect past tense.
Learn more about Spanish verb conjugation