1 Can you swim?

2 Could  you swim when you were three?

3. Did you go to school yesterday?

4. Do you go to school on Sundays?

5. Can you ski?

6. Could you ski when you were two?

7. Could you use a computer when you were five?

8. Does a postman wear beautiful clothes?

9. Does an architect design buildings?

10. Do you study English?

11. Did you study English when you three?

12. did you live in Mexico last year?

13. Do you eat Chinese food every day?

14. Did you drive a truck last summer?

15. Does a waiter serve meats