依次填入下面一段文字横线处的语句，衔接最恰当的一组是（　　）如果说河对岸的草原上万籁无声， ，使所有的色调融合为浑然一体，使所有的声音汇成合唱，那是多么奇伟的声音，多么壮观的景象！①各种声响使这荒野的世界充满一种亲切而粗犷的和谐②鸟喙击橡树干的笃笃声③可是，当微风吹进丛林，摇晃这些飘浮的物体，使白色、蓝色、绿色的生物混杂交错④野兽穿越丛林的沙沙声⑤动物吞啮食物或咬碎果核的咂咂声⑥河这边却是一片骚动和聒噪

There _______ two nice films this evening.

Nobody can explain the mystery ____ he suddenly disappeared.

Sarah pretended to be cheerful，________nothing about the argument.

There is someone knocking at the door – who it be?— I think it is John. He told me he would come. [ ]