Answer:
7.) Was
8.) Was
9.) Have been
Explanation:
"A linking verb connects the subject with a word that gives information about the subject, such as a condition or relationship. The most common linking verbs are forms of the verb to be: am, is, are, was, were, being, been."-https://examples.yourdictionary.com/examples-of-linking-verbs.html
I hope this helps!
