Choose the right form of the verb: Before we started on the trip we __________ everything with his parents. Options: had discussed; were discussed; discussed; have discussed.

Before we started on the trip we had discussed everything with his parents.

Past Perfect is used because the discussion happened before another past event, “we started”. Перевод: «Перед тем как мы отправились в поездку, мы обсудили всё с его родителями».

Ответ: had discussed.