Решение:
- 1. The estate COVERED 300 hectares. (Глагол в Past Simple, обозначающий площадь, покрываемую землей).
- 2. It had the famous Amber Room, a chamber entirely lined with amber panels which WEIGHED over 6 tons. (Глагол в Past Simple, обозначающий вес).
- 3. The blue and white facade, adorned with gilded details, impresses visitors with ITS Baroque splendor, evoking Versailles. (Местоимение 'its' для указания принадлежности).
- 4. In the past the Great Hall with crystal chandeliers and parquet floors USEd for official ceremonies for European royalty. (Глагол в Past Simple, обозначающий использование в прошлом).
- 5. Since its restoration after Nazi looting in World War II, it ATTRACTS over a million guests annually. (Глагол в Present Simple, обозначающий регулярное действие в настоящем).
- 6. The surrounding gardens are BEAUTIFUL than the palace itself for many nature lovers, with pavilions, ponds, and themed grottos designed by Francesco Rastrelli. (Прилагательное, описывающее сады).
Ответ: COVERED, WEIGHED, ITS, USEd, ATTRACTS, BEAUTIFUL.