Допоможіть будь ласка скласти речення з неправильним дієсловом was щоб було у реченні

1)I was watching TV when my mom came home.
2) I was doing my homework while my mom was cooking.
3) Today I was reading an interesting book for four hours.
4)My teacher was shouting when the commission suddenly came into the class.

I was skateboarding yesterday
He was playing computer games last year