I ___________ my room (paint) ___________. That’s why there is all that mess

1. I ___________ my room (paint) ___________. That’s why there is all that mess.
2. The teacher ___________ her students (clean) ___________ the board every day.
3. The house was so cold last winter, we ___________ a central heating system ___________. (install).
4. I can’t read Chinese so I always ___________ the document (translate) ___________. My secretary is helping with the translation.
5. Our swimming pool is so small so we ____ a new one (make) _____. They are starting work on it next week.