what on earth happened?和what happened on earth?哪个对?

what would happen if there were no water on the earth 句型怎么转换 what on earth? WHAT ON EARTH怎么样 what on the earth? 英语翻译What on earth. What on earth is rap? what is happiness on earth? what on earth are you? what are there on earth 连词成句：what you think,in twenty years' time write down,may happen everyone,will,to eat,have enough food,I hoope,on earth What is the biggest animal on earth? what on earth is it anyway What on earth do you need? 翻译what on earth was it about what are the smallest birds on earth What happen what happen happen on