Задать все возможные вопросы . all the drugs are kept by nurses in special drug cabinets

1. Are all the drugs kept by nurses in special drug cabinets?
2. Where are all the drugs kept by nurses?
3. Are all the drugs kept by nurses or by doctors in special drug cabinets?
4. What is kept by nurses in special drug cabinets?
5. All the drugs are kept by nurses in special drug cabinets, aren't they?