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.