What makes them similar is that that both Charrington and O'Brien seem to be on Winston's side, i.e. against the Party. Another similarity is that they both end up betraying him, essentially they deceived him by hiding their true intentions from him. Charrington uses a literal disguise, while O'Brien was just pretending to be something he is not.
Answer: babump whoosh all those, and a good title would be My first roller coaster ride, and he felt nervous about being on a roller coaster
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D. It helps listeners interpret the characters' emotions and motivations.
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