依次填入下列横线处的语句，语气和谐、语意连贯的一组是 （ ）人们往往喜欢长盛不衰的事物，渴求永蕴魅力的生命，然而，我们冷静地细细想来， 春天，桃李熠熠生辉，光彩照人，可一入夏便落英缤纷；夏日，荷塘凝碧，幽香暗送，但到了秋天，只留下断梗败叶的满目苍凉；秋天，菊花锦簇，热烈奔放，但当寒风劲吹之际， 。由此可见，世上再美的事物也不会是永恒的。①哪有永不衰竭的事物，哪有永不凋谢的鲜花呢②哪有永不凋谢的鲜花，哪有永中衰竭的事物呢③红梅傲霜斗雪，独占了严冬的俏枝④只好让位于傲霜斗雪的红梅

He was nearly killed in a car accident the other day.— Oh, when was ________ exactly?— It was on April 28 ________ he was riding a bike on the driveway.[ ]

The murderer was ______ for almost a month before he was arrested in Hainan[ ]

They kept trying _____ they must have known it was hopeless

th Mr Brown _______ us, we willsurely make more progress in our oral practice