_____ we got to the station, the train had left already

依次填入下列各句横线处的成语，最恰当的一组是（ ）①曾几何时，来自网络用户对网费、网速的吐槽声早已____________，但人们从网络运营商口里听到的仍然多为“网费并不高”“网速不比外国慢”等哓哓辩解。②4月11日上午，刚刚建成不久的威海乒羽健身中心____________，来自全市的体育爱好者们齐聚一堂，庆祝第五届全民健身运动会暨中小学体育联赛开幕。③走到瀑布跟前，一刹那的感觉我无法形容，那____________的喧嚣让我热血沸腾，那奔腾怒吼的波涛让我的血脉不由自主地随之跳动。

_____ all the animals I’ve ever had, these two dogs are the most sensitive to the spoken word.[ ]

Which sweater do you prefer, the yellow one or thepink one—______. I like a light blue one.

I’m not sure ______ Bill will come or not.—No, he isn’t.