English Pronouns Quiz. Who – Whom – Whose

The pronoun who, in the English language, is the interrogative and relative pronoun that is used to refer to human beings and some animals perceived as sentient. wikipedia
Other pronouns in these groups ( which, that, what, whatever, whichever, etc) do not change forms across case, person, gender, and number, but who does change form with case.

Nominative / Subjective	Objective	Possessive
who	whom	whose
Who took my car? I want to know who did that.	With whom are we meeting? To whom do you wish to speak?	Whose car is it? I forgot whose phone it was.

Note: Whose (possessive form of who) is used as an adjective in some quiz sentences.