Please tell me the verb in the following sentences

Question

1) my aunt is the author of a comic strip? 2) her office is a busy and colorful place? 3)the characters in her strip are little animals ? 4) the sales of his newspaper were high? 5) now comics have become serious business for publishers?

Answer 1

1 is
2 is
3 are
4 were
5 have become

If these trouble you, you need to review the forms of the verb "to be"