Past simple and continuous

While he ______ (go) home, he met his best friend in the park.

Jim was watching TV when his mum _____ (call) him on the phone.

My mum ___ (cook) lunch when grandma phoned her.

We ___ (ride) our bikes in the park when Tom crashed into a tree.

While the girls were sitting on the bus, they ___ (see) a famous person in the street.