Буква "S" после глагола ставится в том случае, когда в предложении говорится о ком-то
1. We have got three dogs.
2. My sister lives in in Kiev.
3. Where does he go swimming?
4. My friends hate doing homework.
5. Does Olga like English?
6. I enjoy roller-skating.
7. What do you do in your leasure time?
8. They watch television in the evening.
9. Tom goes swimming every day.
10. My brother and I like singing very much.