想知道What happened just now和What did happen just now哪一个是对的?一般疑

what just happened?= what happened just now? Mary was heard ----just now .what happen? What happened _______the young boy just now? He told me what happened just now的 被动语态 英语翻译Olivier,tell me what happened What did you say just now? 英语翻译What did you see just now? what did you see just now? what did thing call me just now? what did Benny do just now?的意思是什么 what did you do just now和 what have you just done 改错题：What was happened to the oldman just now. george was heard ----(cry)just now.what happened?