"Feedback" is an uncountable noun so it doesn't have a plural form.
The plural form for the noun workshop is workshops.The noun feedback is an uncountable noun with no plural form; for example:"The feedback was retrieved." and, "Feedback is valuable to scientists."
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.
The plural of "she" is "they", so the plural of "she had" is "they had".
The plural form for the noun workshop is workshops.The noun feedback is an uncountable noun with no plural form; for example:"The feedback was retrieved." and, "Feedback is valuable to scientists."
Feedback is both singular and plural, like deer and fish.
"Feedback" is typically used as a singular noun. For example, "I received feedback on my presentation." However, in some contexts, it may be used as a mass noun and not have a specific singular or plural form.
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 "is" is "are."
The plural form of "I" is "we."
The plural form of "was" is "were."
"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.