steve's
'There' is an adverb that refers to a location, while 'their' is a possessive adjective. You would use 'there' to say something like "I went to Steve's house yesterday and slept over there." 'Their' would be used to say "Steve and I really like their new car."
Him is not possessive. The possessive would be 'his'.
You can use both terms but Steves' is more formal
No, he is not possessive. The possessive form would be his.
The singular possessive is biker's; the plural possessive is bikers'.
Women's is a plural possessive. The singular possessive is woman's
The singular possessive is ant's.The plural possessive is ants'.
The possessive form of "he" is "his": He did his homework after dinner.
The singular possessive is "ox's". Another contributor wrote "oxen's", but that is the plural possessive.
The singular possessive is Richard's; the plural possessive is Richards'.
The singular possessive is athlete's. The plural possessive is athletes'.
Possessive nouns (but not possessive pronouns) use apostrophes; therefore, "brother's" is possessive. "Brothers" is plural.