Interrupted Past Continuous

We _____ (have) a picnic when it started to rain.

_____ my mum was working in the garden, I was making breakfast.

• While

• When

I was walking in the park when I _____ (fall) over.

She _____ (look) at her phone when she crossed the road.

They were sleeping _____ the burglars broke into the house.

• when

• while

I was doing homework when you _____ (call) me.

They _____ (eat) dinner when we arrived.

He _____ (play) with my dog when it suddenly bit him.

_____ she was getting off the bus, she fell over.

• While

• When

Dad was driving to work when he _____ (see) an accident.