TASK DEFINITION: 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.
PROBLEM: madame danglars ____ shuddered at the desolate aspect of the mansion

SOLUTION: involuntarily

PROBLEM: but i'd rather believe that it was out of the kindness of his heart wouldn't you when we got on the train i felt as if everybody must be looking at me and pitying me but ____ just went to work and imagined that i had on the most beautiful pale blue silk dress because when you are imagining you might as well imagine something worth while

SOLUTION: i

PROBLEM: we've got to drive a long piece haven't we missus spencer said it was eight miles i'm glad because i love driving oh it seems so wonderful that i'm going to live with you and belong to you i've never belonged to anybody not really but the asylum was the worst i've only been in it ____ months but that was enough

SOLUTION:
four