That depends on what's wrong with it.
Possessives are formed by adding an apostrophe -s ('s) to the end of the word, or just an apostrophe (') to plural nouns that already end with -s.
Example singular possessive nouns:
the cover of the book = the book's cover
the teacher of our class = our class's teacher
the coat of the child = the child's coat
the shoes of the man = the man's shoes
the house of Mr. Morris = Mr. Morris's house
Example plural possessive nouns:
the covers of the books = the books' covers
the assembly of classes = the classes' assembly
the coats of the children = the children's coats
shoes for men = men's shoes
the house of the Morrises = the Morrises' house
No, he is not possessive. The possessive form would be his.
The possessive noun of Sam is Sam's.
The possessive noun for "diplomat" is "diplomat's." For example: The diplomat's speech was well-received.
No, "she's" stands for she is. The singular possessive noun for a female is her or hers.
The possessive form for the plural noun wives is wives'.
The possessive singular noun is explorer's. The possessive plural noun is explorers'.
The possessive form for the noun coyote is coyote's.
The possessive form of zoo is zoo's.
The possessive form for the noun preacher is preacher's.
The possessive form for the noun laboratory is laboratory's.
No, he is not possessive. The possessive form would be his.
The possessive form for the noun oxygen is oxygen's.
The possessive form for the noun coyote is coyote's.
The possessive form is grandson's.
The possessive form is island's.
The singular possessive noun is Rex's.
No, it is a singular possessive noun.