1 My sister was carrying the shopping when she dropped / was dropping the eggs.
2 While I was standing outside the cinema, I saw / was seeing Brad Pitt.
3 When my teacher walked into the room we listened / were listening to music.
4 A big dog took / was taking our ball while we were playing football.
5 While we looked /were looking for wood to build a fire, we discovered a secret cave.
Объяснение:
