When did the universe come into being?Will the earth be destroyed/explode?要英文,并且简洁,不是要翻译，是要回答。

when did the accident happen when did the dinosaurs live? When did the children come? 帮忙看一篇英语作文有无语法错误并指出I have a great dream .i want to be an astronaut when i grow up .i am surprised at univers .it is very beautifui and intretsting .i liked the univers very much .i know something about it i know the Could you tell me 后的一般疑问句要不要用ifCould you tell me --any pictures about the univers?A.did they take B.they tookC.if they take D.if they took后面还有last year When did the earthquake of Wenchuan happen when did the world war break out? When did the accident ( ) ( ) (发生）?填空 when did you take the medicine last when did the Iraqi War break out ? When did they arrive ( ) the airport 翻译 When did the last dinosaurs live? when did you arrive.the museum? When did you_______( 到达)at the airport. when did the Shaghai World Expo begin? when did the play put on when did the story take place?为什么要用did When did the girl finish the homework?中文