Parentheses IS the plural form. The singular is parenthesis.
The plural form for the noun parenthesis is parentheses.
The plural form for the noun alto is altos. The plural possessive form is altos'.Example: The altos' rehearsal is scheduled for Friday.
The plural form of bracket is brackets.
The plural form of myriad is myriads.
Allies.
Ally is singular. Allies means more than one Ally.
Ally is the singular form. Allies is plural, (more than one).
The plural is valleys.Unlike nouns ending in -y (ally, spy), English nouns ending in -ay or -ey form regular S plurals.
Allies.
One alley, two alleysIt is spelled a l l e y sHope that helped :)
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)
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."