Bicycles', as in 'The bicycles' saddles were very worn.'
bicycle's
The pronoun 'his' is a possessive pronoun and a possessive adjective.The corresponding plural possessive pronoun is theirs.The corresponding plural possessive adjective is their.Examples:Jack got a new bicycle. The red one is his. (possessive pronoun)The twins got new bicycles. The red ones are theirs. (possessive adjective.Jack rides his bicycle to school. (possessive pronoun)The twins ride their bicycles to school. (possessive adjectives)
The word messenger's is the possessive form for the noun messenger, for example the messenger's bicycle. The plural possessive form is messengers'.
Bicycle's.
Yes, they can; for example:The boys ran for the school bus. (plural noun, boys)The boy's parents bought him a bicycle. (singular possessive noun, boy's; plural noun parents)Both boys' bicycles were blue. (plural possessive noun, boys'; plural noun, bicycles)
The plural form is Mexicans. The plural possessive is Mexicans'.
The plural form is echoes. The plural possessive is echoes'.
Coaster's is singular possessive. The plural is coasters, the plural possessive is coasters'.
The plural of senior is seniors. The plural possessive of seniors is seniors'
The singular possessive of "ant" is "ant's" and the plural possessive is "ants'".
The plural is briefs. The plural possessive is briefs'.
The plural is lads. The plural possessive is lads'.
The plural is trollies. The plural possessive is trollies'.