Question

Is the following word that has an arrow above it in the sentence a noun, pronoun, verb, conjunction, adverb, adjective, preposition or interjection.
Who has the key?
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Answer 1

$\huge\boxed{\text{Pronoun}}$

In the English language, the word "who" is almost always used as a pronoun.

It represents a person, similar to the words "I" and "me".