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Help the tour guide complete the itinerary for tomorrow's vacation to the year 3000.
By the end of our intergalactic tour tomorrow, we ____________________________ three different galaxies, and you ___________________________ enough alien souvenirs to completely fill a spaceship.
The correct answers are will have visited and will have bought.
The Future Perfect tense is used for actions that will be finished before a certain point in the future. "By the end of our intergalactic tour" sets the future endpoint, so we need will have visited and will have bought to show that the actions will be complete by then.