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: it isn't heavy i've got all my worldly goods in it but it isn't heavy and if it isn't carried in just a certain way the handle pulls out so i'd better keep it because i know the exact knack of it it's an extremely old carpet bag oh ____ very glad you've come even if it would have been nice to sleep in a wild cherry tree
Output:
i'm