* Singular subject:
* If the subject is a person, use "I," "he," "she," or "it."
* Example: "The cat is it."
* If the subject is a thing or concept, use "it."
* Example: "The book is it."
* Plural subject:
* Use "we," "they," or "you."
* Example: "The students are they."
It's important to note:
* "Is" is a form of the verb "to be." The pronoun that follows "is" is the subject complement, which renames or describes the subject.
* The pronoun should agree in number and person with the subject. If the subject is singular, the pronoun should be singular; if the subject is plural, the pronoun should be plural.
Let me know if you'd like to see some more examples!