Answer:
These are examples of the forms of the verb.
Step-by-step explanation:
Is or Was when the subject is a singular noun or a third-person singular pronoun, for example, She (noun) is/ was (verb) sleeping.
Are when the subject is a plural noun or a plural pronoun (e.g., we, you, they), for example, you are wonderful.
Am when the subject is the first person pronoun I, for example, I am a teacher.