1. Общий: Was the winter palace altered and extended during the reign of Catherine Lloyd?
2. К подлежащему: What was altered and extended during the reigh of Catherine Lloyd?
3. Специальный: When was the winter palace altered and extended?
4. Разделительный: Was winter palace or Kremlin (предположим, я не знаю, какой ещё дворец взять) altered and extended during the reigh of Catherine Lloyd?
5. С хвостиком: During the reigh of Catherine Lloyd the winter palace was altered and extended, wasn’t it?