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: well marilla i'll just tell you ____ that i think you're doing a mighty foolish thing a risky thing that's what you don't know what you're getting you're bringing a strange child into your house and home and you don't know a single thing about him nor what his disposition is like nor what sort of parents he had

Solution: plain