с заданием на времена, если можно то с объяснением

1) Katya was texting with her mom when the teacher entered the class.
2) I have just finished eating when Jonathan arrived.
3) She was cooking dinner while my friends were watching TV.
4) He drove for an hour before he realized he was going the wrong way.
5) After Ivan finished reading, he put out the light.
6) I woke up, brushed my teeth, put on some clothes an left the house.
7) When I went to Spain last year, I hadn't flown before.