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.
One example: The kid on the street is ____ soccer
Solution is here: playing
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'

Now, solve this: 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
Solution:
eyes