The plural form of "do" is "do" and the plural form of "don't" is "don't." These words do not change in the plural form when used in a sentence.
The plural form of him, her, or it is them. (objective pronouns)
The plural form of "was" is "were."
The plural form of the demonstrative pronoun 'that' is those.
The plural form of "trench" is "trenches."
The possessive form of the plural noun kings is kings'.Example: All of the kings' portraits lined the hall.
The singular possessive for of king is king's.
Bridges is the plural form of bridge.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
There is no plural form for the word, countries. This word itself is a plural.
"Groceries" is the plural form of "grocery."
The plural form of "meter" is "meters."
The plural form for the noun sergeant is sergeants; the plural possessive form is sergeants'.
It has no plural form.
The plural form of rung is rungs.
The plural form of parenthesis is parentheses.
"Important" is an adjective. It does not have a plural form.