题目内容：

Frederick William I, the King of Prussia, 1.____________ that his greatest gift to the Russian people would have 2.______________. This gift was the Amber room, which was given this name because several tons of amber were used to make it. The amber 3.___________ had a beautiful yellow-brown colour like honey. The design of the room was 4.___________ popular in those days. It was also a treasure5.________, which took the country’s artists about ten years to make.