step.4

1. The boy keeps the book on the table.
2. Where does the boy keep the book? on the table.
3. Who keeps the book on the table? the boy.
4. What does he keep on the table? the book
5. The boys sit on the chairs. 
6. Know now. the boy keeps. the boys sit and not sits.
7. I  sit,We sit, you sit, you sit, they sit. BUT he sits,she sits, it sits.
8. Where do the boys sit? on the chairs.
9. Who sits on the chairs? the boys
10. What do the boys do? sit on the chairs.
11. Do the boy sit on the chairs? yes.