What was Kim doing when the bird flew by?

She was reading a book when the bird flew by.

What was Sam doing when the bird flew by?

He was eating lunch when the bird flew by.

What were you doing when the rabbit ran by?

We were painting a picture when the rabbit ran by.

What was it doing when the parrot flew by?

It was hopping along when the parrot flew by.

What were they doing when the duck walked by?

They were building a tower when the duck walked by.

What were you doing when the mouse walked by?

I was listening to a song when the mouse walked by.