By comparing the freedom movement to the flight of an airplane in MLK's Nobel Prize Acceptance Speech, King recognizes all of the people who made the movement possible. When talking about the flight, he mentions all of the personnel, not just the pilot but all of the ground crew who are rarely seen, that make the flight successful. He is pointing out that the freedom movement couldn't have been successful without all of the people in the background.
In the passage of Fitzgerald's "The great Gatsby", the reader can infer that the story conflict will be based on wealth and appearances, because of the contrast between the narrator's house, an "eyesore", and that of his neighbors, "white palaces".
We need the passage or answer choices.
All of the guests HAD gone to the concert in the park.
(But I think it could also be have, if you are talking about it happening in the present).
