Did he happen to look at people who sign?I mean deaf people.把句子结构也解释一下.

1.He asked what（）A.did happen to her B.happened to herC.she happened D.did she happen ( )Could you tell me-----?A.what happened to him B.what did he happen C.what did he happen to C.C.what he happened 选哪个?为什么? 为什么：他发生了什么?是what happened to him 而不是what did he happen?那为什么又说what ishappening?what will happen? Did he happen to look at people who sign?I mean deaf people.把句子结构也解释一下. they don't know what ————yesterdayA.did he happen B.he happened C.happened to him D. was happened to him they don't know what ————yesterdayA.did he happen B.he happened C.happened to him D.was happened to him What last night?A.did happen to her B.did she happen C.was happening D.did she happened that 从句的疑问形式.如Did it happen to you that you had been out when he called 中为何用did 看主...that 从句的疑问形式.如Did it happen to you that you had been out when he called 中为何用did 看主句还是从句 What did happen to you the day before yesterday?(改错) What did this happen to me?这是什么意思 请问“Did you happen to meet that linguist?”怎么翻译? 350.What __yesterday evening?A.did you happen B.you happende C.happened to you D.did happen to you did you happen to met him yesterday?改为被动语态打错了did you happen to meet him yesterday He asked his father a.where it happen B.where did it happen C.how it happened D.how did it happen ---what -------?---he hit a car.luckily,he wasn't badly hurt.a .did he happen b.has he happenedc.was happen d.happen to himab我懂,排除了,但为什么不选c?如果要选c,怎么改?一定要用完成时吗? 单项选择：---He hasn't come yet.What do you know______?---No idea.选项：A.was hanppened to him B.has happened to him C.did he happen D.has he happened请问选那个?为什么? happen to happen to