what (happend)to our country in 100 years?填空

what (happend)to our country in 100 years?填空 Do you know what happend to him? what happend? what happend Do you know what happend to him?为什么用what happend to him? She didn't come to school yesterday.Do you know what __her?A has happend with b had happend with c has happend to d had happend to Do your know_______?Oh,he didn't pass the examA:What happens to him B:What was happend to himC:What did he happenD:What happend to him Face up to life with smile no matter what happend what happend是什么意思 what happend to you?改为同义句 what ___ ___ to you? came to the writer to find out what had happend to her 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 Not to know what happend befora one was bron always to be a child 的意思 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?