i w___ who broke the window of the classroom

i w___ who broke the window of the classroom Who broke the window? --Who broke the window? daming regretted that he broke the window of the classroom.( ---Who broke the window ---I think _______ must be one of th I know＿＿＿（exact)who broke the window. 翻译：I'm wondering who broke the window. I don,t know who broke the window Please _________ who broke the window. Please ____ who broke the window —Who broke the window?  who broke the window --I____(是我)