We now know the first dinosaurs_____(出现)about 230 million ye

We now know the first dinosaurs_____(出现)about 230 million ye We now know the first dinosaurs ___ [apper]about 230 million we all know that the first diosaurs a____ about 230 milliony Exactly when the first people arrived in what we now know as 关于一些语法问题1.we know that the first dinosaurs appeared about 12 We now know that about ________ all the kinds of seaweed are shall we go to visit the Great Wall first?_ A.yes,we do B.ye I don't know much about the city .I'ye been there( ) 英语翻译1.dinosaurs first appeared about 230 million years ago 2 单句改错 (1)We know the computers are produced by Japan every ye We had learned (learn) about 800 words by the end of this ye now we know the earth goes round the sun.