Professors
The plural noun is paleontologists.The plural possessive form is paleontologists'.Example: The professor is making a presentation at the paleontologists' conference.
Yes, the word insight has a plural form: insights. Example: The professor has developed many insights over his years of study.
The possessive form of "professor" is "professor's."
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 "was" is "were."
The plural form of "I" is "we."
"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.