The reason ______ he was late was unknown.

The reason ______ he was late was unknown The reason ______ he was late was unknown. the reason why he was late for school is still unknown to us The reason why he was late was true . the reason that he was late was unknow 对么 为什么 The reason ______ he gave for being late was _______ he over The reason why he was late was the rainstorm.He was late ___ He continued_____(explain) the reason why he was late the reason why he was late was that he got up late the house The reason why he was late was that he was held up in the tr Do you know the reason-----he was late for school. 】Do you know the reason ____ he was late?