Ответ:

1. He washes his hand every day.

2. I'm not washing my hands now.

3. They don't wash their hands every day.

4. I washed my hands yesterday.

5. She didn't wash her hands yesterday.

6. Does he wash his hands every day?

7. Did she wash her hands yesterday?

8. Do you wash your hands every day?

9. Is he washing his hands now?

10. He doesn't wash his hand every day.

11. What does he wash every day? He washes his hands every day.

12. What did he wash yesterday? He washed his hands yesterday.

13. What will she wash? She will wash her face.

14. Will you wash your hands? Yes, I will.

15. I will not wash my hands. I washed them yesterday.

16. I'm going to wash my hands.

17. He is not going to wash his hands.

18. He was washing his hands when I arrived.

19. I already washed my hands.

20. Wash your hands! They are dirty.