Написать 3 предложения с while и 3 предложения с when

I was doing my homework while my little sister was playing with toys.
While father was reading a newspaper, mother was doing the washing up.
Kate was watching TV while her granny was knitting.

When the teacher entered the classroom, the pupils were reading.
When I came home my mum was baking a cake.
When she was crossing the street she met her friend.