Who
/hˈu/
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Definition
(pron) What person or people; which person or people; asks for the identity of someone; used in a direct or indirect question.
Sentence Examples
Every person who is alone is alone because they are afraid of others.
I don't have anyone who'd travel with me.
CEFR Practice Quiz
Do you know exactly ____ the person sitting in the corner is? I have never seen him before.