The Great Wall is famous all over the world.all前为什么不加介词?

This is the Great Wall. where is the great wall? The Great Wall is the ()of China The Great Wall is the____(long)wall in the world How long is the Great Wall How wide is the Great Wall How old is the Great Wall China is _______ the Great Wall china is f_____for the great wall China is f_____of the Great Wall Where is the Great Wall hotel?改错 how old is the Great Wall? the great wall is wondeful改为感叹句 there is a wall.that is called Great Wall变为一句话 we call the wall The Great Wall 是什么语法? Great wall the Great wall 翻译 The great Wall is the longest of the 翻译：the Great Wall the great wall 造句 英语翻译The Great Wall is the ___ ___ Chinese nation. The Great Wall is one of the s___ of China.