как из этих предложений сделать, отрицательное и вопросительное?

16. Do nurses look after patients in hospitals? Nurses don't look after patients in hospitals.
17. Do I usually go away at weekends? I don't usually go away at weekends.
18. Does the earth go round the sun? The earth doesn't go round the sun.
19. Does the café open at 7.30 in the morning? The café doesn't open at 7.30 in the morning.
20. Do I come from Canada? I don't come from Canada.
21. Does Julie drink tea very often? Julie doesn't drink tea very often.
22. Do I often go to the dentist? I don't often go to the dentist.
23. Does Tanya speak German very well? Tanya doesn't speak German very well.
24. Do I often drink green tea? I don't often drink green tea.
25. Does the swimming pool open at 7.30 every morning? The swimming pool doesn't open at 7.30 every morning.
26. Do my parents live in a very small flat? My parents don't live in a very small flat.
27. Do I often use my computer? I don't often use my computer.
28. Does it take me an hour to get to work? It doesn't take me an hour to get to work.
29. Do we often play tennis? We don't often play tennis.
30. Does Liz read a newspaper every day? Liz doesn't read a newspaper every day.
31. Do they go to the cinema a lot? They don't go to the cinema a lot.

Преобразовать каждое из утвердительной в нужную форму... в соответствии с правилами построения данных форм предложений этого языка

do Nurses look after patients in hospitals.?