初三英语定语从句的题例句：It's a surprising building which is made of ear

初三英语定语从句的题
例句：It's a surprising building which is made of earth.
It's an amazing building which is unique in the world.
It's a beautiful building that forms a huge ring or square.
It's a beautiful building that can protect against enemies,earthquakes,and so on.
仿照例句写定语从句.提示词：
(1) cave/dig into a hillside/cool in summer/use less land
(2) a large round tent/be easy to move/with a roof like an umbrella
例句的提示词是 be made of/unique in the world/a huge ring or square