You will be given a definition of a task first, then some input of the task.
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.

and demand of her why she wasn't a boy matthew groaned in spirit as he turned about and shuffled gently down the platform towards her she had been watching him ever since he had passed her and she had her ____ on him now matthew was not looking at her
Output:
eyes