Chapter 1 " It was one of the rituals, the evening telling of feelings." The tone that they use is joyous because they enjoy telling their feelings. They take turns saying how they feel about things they did that day.
Chapter 2 " Committee of Elders, who took the responsibility so seriously that there were never even any jokes made about Assignments." The tone is serious because the Assignments is a very important thing. The Assignments are asssigned to them when it's the ceremony of twelve.
Chapter 3 " the apple had changed. Just for an instant." The tone of this is mysterious because it was strange how the apple changed when it was passed to him. He noticed that the apple changed every time it was passed.