You are given an English sentence with a blank, and you need to predict the missing word. After completing, the whole sentence should be gramatically correct and non-ambiguous.
Example: The kid on the street is ____ soccer
Example solution: playing
Example explanation: This is the original sentence 'The kid on the street is playing soccer' So, we have correctly predicted the missing word to be 'soccer'

Problem: and that if she noticed anything odd or out of place she would never rest until she had ferreted out the whys and wherefores thereof there are plenty ____ people in avonlea and out of it who can attend closely to their neighbor's business by dint of neglecting their own

Solution: of