Final answer:
The word 'ordinary' or 'quiet' could effectively complete the sentence, reflecting the uneventful nature of the day before it was interrupted by a special report.
Step-by-step explanation:
Based on the context provided, the student is seeking a descriptive word to complete the sentence: 'Saturday had been a(n) ___, uneventful day until the special report interrupted every television and radio broadcast in the city.'
One suitable word to fill in the blank could be ordinary. 'Ordinary' indicates that the day was typical or unremarkable, which is coherent with a day being described as uneventful. Another fitting option could be quiet, as it implies a lack of notable or exciting events.
Given the additional excerpts provided, which display a mix of tranquility and sudden unwelcome occurrences, it seems that the student is studying sections of text where peaceful or monotonous scenes are intruded upon by disturbances or significant events. Thus, certain words that reflect mundanity or stillness preceding a disruption would be appropriate choices for the fill-in-the-blank question.