Does "even" necessary in here?
"Even" in this case functions to emphasize the feeling of incredulity or surprise. You will find that it is commonly used in exclamations or expressions of surprise. It is not necessary in this context, but is commonly used when speaking as a form of emphasis. Ex: The entire meal was vegetarian, and I don't even like vegetables. Ex: She was so tired, she couldn't even keep her eyes open.
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