Ответ:
- When I came home, my mother was cooking dinner. Краткое событие произошло на фоне длительного действия.
- They were playing chess while I was reading a magazine. Два действия происходили одновременно.
- She broke her leg last winter. Указан завершённый период в прошлом.
- What were you doing at 8 o’clock yesterday? Спрашивается о действии в конкретный момент в прошлом.
- He was walking down the street when he saw an old friend. Краткое событие произошло во время длительного действия.
- We did not watch TV yesterday.
- The sun was shining and the birds were singing when we left the house. Оба действия происходили в тот момент.
- Did you meet him at the party last week?
