Instructions: 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.
Input: 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
Output:
four