I don't know the reason()he comes late.填写先行词

I don't know the reason()he comes late.填写先行词 I don't know the reason -------- he cried Athat Bwhy I don't know the reason why he was absent yesterday.reason后面 I don't know the reason why he did't come to the meeting yes 1、I don't know the reason _____ he didn't turn up. I don't quite know the reason _______ he explained to me I don't quite know the reason _______ he told it to me i don't know if he comes next week I don't know the reason( )you hate3 him foy. 高一几道英语题1、I don't know the reason _____ he didn't turn up.2、T I don't know __.A.the reason why can be B.why the reason may I don’t know the reason why he said these words.里面的why引导的从句是