The plural form of chain is chains.
chains
The surname may be McDonald or MacDonald, with the plural Mcdonalds / MacDonalds.The fast food chain is the posssessive form McDonald's.
Bridges is the plural form of bridge.
"Groceries" is the plural form of "grocery."
There is no plural form for the word, countries. This word itself is a plural.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
The plural form of "meter" is "meters."
The possessive form for the plural noun keys is keys'. Example use:The keys' chain was caught on my sweater.
It has no plural form.
The plural form for the noun sergeant is sergeants; the plural possessive form is sergeants'.
The plural form of rung is rungs.