Final answer:
The underlined word 'oblivious' in the sentence means 'unaware'.
Step-by-step explanation:
The word that best matches the underlined word 'oblivious' in the given sentence is 'unaware'.
The students were not paying attention or aware of their teacher's wishes because they were focused on the school mascot dancing in the hallway.
Examples of synonyms for 'unaware' include 'ignorant,' 'unconscious,' or 'clueless'.
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