III. 1. were building
2. was driving
3. was chatting-was teaching
4. was watching
5. was preparing
6. was you doing
7. was you going
8. weren't going
9. wasn't doing
10. was reading
IV. 1. He wasn't planting trees in the garden at 4 pm yesterday.
Was he planting trees in the garden at 4 pm yesterday ?
2. They weren't working when she came yesterday.
Were they working when she came yesterday?
3. She wasn't painting a picture while her mother was making a cake.
Was she painting a picture while her mother was making a cake?
4. Anna wasn't riding her bike to school when Peter saw her yestetday.
Was Anna riding her bike to school....yesterday?
5. He wasn't typing a letter when his boss went into the room.
Was he typing a letter when his boss went into the room
