why did 和 why was/were 怎么区分?

why did 和 why were/was 怎么区分 why did 和 why was/were 怎么区分? What was your favorite subject?Why did you like it? 英语翻译why did Carson steal money?He was broke Why don't you pretend like we did?怎么翻译? Why was Betty late for school yesterday?为什么不是why did why did you miss Why did you leave Why did the people why did not you she ask me--go to her house last night A.why was not I B.why did not I C.why I was not D.why...she ask me--go to her house last nightA.why was not IB.why did not IC.why I was notD.why I did not why did you come so late?the bus was crowed.we were kept for half an hour.为什么用were kept? why did u say it?what did you mean we knew each other before? 请求why would you do that?和why did you do that?有什么区别 why did you not work 和why didn't you work意思一样吗 Why should we marry? why are we sleep? why we must sleep