The singular possessive form is committee's.
"Firefly's" is a singular possessive noun.
The singular possessive noun is stepchild's.
The possessive form of the singular noun neighbor is neighbor's.Example: My neighbor's garden is really beautiful.The plural form for the noun neighbor is neighbors.The plural possessive form is neighbors'.Example: The neighbors' committee raised the money for a new sign.
No, "tomb" is a singular common noun, not a possessive noun.
The singular noun is tooth.The singular possessive noun is tooth's.
Yes, "vest's" is the singular possessive form of the noun "vest."
The singular possessive noun of grandmother is grandmother's.
No, "she's" is a contraction of "she is" or "she has." It is not a possessive noun.
The singular possessive of the noun "arch" is "arch's."
The possessive form of the singular noun son is son's.Example: Your son's grades have improved this semester.
No, "Chris's" is a singular possessive noun. It shows that something belongs to Chris.
Committee is singular. Committees is plural.