The possessive form of "he" is "his": He did his homework after dinner.
No, it is singular, the possessive form of it is its. The plural form of it is they or them, and the possessive form is their.To answer the question directly: there is no such word as ITS'.
The possessive form is posse's.
The possessive form for "lawyer" is "lawyer's."
The possessive form is whistle's.
The plural possessive form is Luis's.
The singular possessive form of the noun "it" is "its". Note that there is no apostrophe in the possessive form of "it". The apostrophe is only used after "it" when used as a contraction of "it is".
The singular possessive form is heart's; the plural possessive form is hearts'.
The possessive form is subsidiary's.
The possessive form for the noun science is science's.
The possessive form of "synopsis" is "synopsis's" or "synopsis'."
The possessive form is my sister's friend.