I've never been sure if it is correct to say "Which teacher do you like more" or "which grandma is closer to you?" because I know that which is used only with things... Please give me some guidelines...
Top answer
It's fine.
— Anonymous
It's fine.
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In your sentences which is not a relative pronoun and consequently it is correctly used. As a relative pronoun it is not used to refer to people: This is the man who/that saw her there.