I was eating lunch when
I saw Mr Bean.
I was running when
I fell.
They were watching TV when
he arrived.
He was listening to music when
he started dancing.
She was playing Blooket when
the doorbell rang.
They were playing games when
the storm started.
He was swimming when
he saw a turtle.
He was doing his homework when
the phone rang.
We were walking to school when
we saw a cat.
I was playing a video game when
my dog barked.