Данный ответ на вопрос:
1. By 8 o’clock yesterday I had done my homework and at 8 o’ clock I was playing the piano.
2. By 9 o’clock grandmother had washed dishes and at 9 o’clock she was watching TV.
3. When I met, my friend he was eating an ice-cream which he had bought it at the corner of the street.
4. When mother came home children were eating the soup which she had cooked in the morning.
5. By 10 o’clock the children had settled comfortably on the sofa and at 10 they were watching a TV film.
6. When I came home yesterday I saw that my little brother had broken my pen and was playing with its pieces.