Как воткнуть нужную форму глагола to be

The forms of verb to be in Present Indefinite are am, is, are.

I am a pupil.            We are pupils.

You are a pupil.      You are pupils.

He is a pupil.           They are pupils.

She is a pupil.

The forms of verb to be in Past Indefinite are was, were.

 I was a child.                  We were artists.

You were a pupil.            You were pupils.

He was a doctor.            They were actors.

She was a teacher.

There is an interesting story about the tower in our city.

There are many questions about it.

There was a car near his house.

There were some children in the bus.