Possessive

The relative pronoun 'that' has two states, a nominative case and objective case, but there is no possessive case.

Tom is possessive.

She's jealous and possessive.

My boyfriend is possessive.

My girlfriend is very possessive.

Are you possessive?

I think Tom is possessive.

Tom is quite possessive.

Tom is very possessive.

Tom is quite possessive, isn't he?

He is very possessive of his car.

Take the rule about pronouns and possessives that Mr. Keegan cited in his challenge to the testing service.

The New York Times, The Washington Post and The Wall Street Journal all do the opposite, opting for ’s to mark a singular possessive and a simple apostrophe for plural possessive (Harrises’ and Walzes’).