who broke the window 划分句子成份

Who broke the window? --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) —Who broke the window yesterday? Can you ()who broke the window yesterday please find out who broke the window.中who broke the window是有 Who broke that window? 请问：It was him who broke the window.这个句子哪里错了? The teacher asked （angry） ,"Who broke the window?"