1When I woke up, my mother was preparing breakfast.
2 Yesterday my mother made breakfast at 8 o'clock.
3I woke up and my mother made breakfast.
4 Yesterday at 8 o'clock my mother was making breakfast.
5When I woke up, my mother had already made breakfast.
6When I woke up, Mom had been making breakfast for 10 minutes.
7 While I was getting dressed, Mom was making breakfast.
