完成句子
①All people, __________________________(无论贫富), have been trying their best to help those in need since the disaster.
②I am not going to ask you questions to find out ___________________________ (你是否理解这些书).
③I will go, __________________________ (不管你是和我一起去还是待在家里).
④I don’t know___________________________(教授是不是喜欢鲜花).