I.
1. Did her uncle work at the hospital three years ago?
2. Where did her uncle work three years ago?
3. Did her uncle work at the hospital three or two years ago?
4. Her uncle worked at the hospital three years ago, didn't he?
5. Who worked at the hospital three years ago?
II.
1. Does this patient need examining (at once)?
2. What does this patient need?
3. Does this patient need examining or medical treatment?
4. This patient needs examining at once, doesn't he?
5. Who needs examining (at once)?