1. to brake - broke;
to sing - sang;
to run - ran;
to skate - skated;
2. I didn't swim in the river last summer.
Where did I swim last summer?
They didn't play tennis 3 hours ago.
Where did they play tennis 3 hours ago?
3. I had lunch 15 minutes ago.
His brother works in an office.
Do you drink tea?
She didn't read yesterday.