The possessive form for the proper noun Kennedy is Kennedy's.
examples:
Kennedy's mother will be picking us up at four.
Mr. Kennedy's dog is a dalmatian.
The Kennedys.
Add an 's' to form the plural of proper nouns ending in 'y'. For example:Kennedy > the KennedysMary > two MarysHarry > two HarrysJelly Belly > a handful of Jelly Bellys
Kennedys.
There is no plural form. Do and Do not are verbs
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "was" is "were."
The plural form of "I" is "we."
The plural form of "is" is "are."
"Groceries" is the plural form of "grocery."
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
The plural form of mouth is mouths. The plural form of month is months. The Mounth is a range of hills in Scotland and does not have a plural form.