Просклонять по 12-ти временам словосочетание to clean the room

1. I clean the room once a week.2. He is cleaning the room now.3. Has she already cleaned the room?4. We cleaned the room last week.5. He was cleaning the room when they came.6. He had cleaned the room by 7 p.m. yesterday.7. They will clean the room tomorrow.8. They will be cleaning the room at this time tomorrow. 9. I will have cleaned the room before you come home from school tomorrow.10. I have been cleaning the room since 2 p.m.11. He had been cleaning the room for an hour before his girlfriend came.12. I will have been cleaning the room for two hours by 3 p.m.