What are the strongest materials used during the period of the Ancient History?When I say the the STRONGEST MATERIAL I meant by rocks and stones but those are not the answer...So Please Help meee...PLEASEEEE

What colour are the What are the students What are the students what are the 求一些好听的英文歌曲,有例子比如We Are Never Ever Getting Back,Tik Tok,We Are Electric,Danza Kuduro,What Doesn't Kill You Stronge,Whistle,Firework.这样节奏感比较好的歌,知道的人可以听听我上面歌给我推荐一下, what what are the twins doing 翻译 What are the zoo animals? what are some of the what the fuck are you what are the school rulers what colour are the slippers? What are the students doing What are the elephants doing, what colour are the-----(apple) What are the four boys? what are the four critisisms What are the kids doing? what are in the park?