What happend 的原句是什么?

What happend 的原句是什么? what happend? what happend i know what happend中的what是什么词 what a difference a day makes的原句是什么 what caused it?和what happend 的区别 what happend是什么意思 what happend to you?改为同义句 what ___ ___ to you? what‘s happend 还是 what’s the happend那一个正确? what happend 和what had happend 怎么用 What is happend over there? BUT,BUT WHAT HAPPEND是什么意思 what happend with you对么 what happened 和WHAT IS HAPPEND的区别区别在哪里啊?还有个WHAT IS HAPPENING,发生了什么应该是WHAT HAPPEND 那WAHT IS 来自 FRIENDS 第二季里的一个句子,this is petty mush what's happend so far?里的what has happend 是宾语从句吗? did you know _______?A what they happend?B what happend to them?这两个答案我很不确定,哪一个是正确的? What happend?Do you know?改为含宾语从句的复合句 Not to know what happend befora one was bron always to be a child 的意思