1. when i came home my litter sister was sleeping
2. came, was playing
3.came, was doing
4.came, was sleeping
5. came, were playing
6. got up, were drinking
7. came, was watching
8. saw, were playing
9. opened, was sitting
10. opened, were dancing
2)
1. w
2. c
3. w
4. w
4)
1. b
2. c
3. c