_______ do you think the train sounds like a tiger—Because it always______ by very quickly and it makes a lot of noise.

依次填入下列各句横线处的成语，最恰当的一组是（ ）①公众人物广受关注，其言行对社会起着示范作用，所以更应该 ，努力做道德风尚的引领者和社会进步的推动者。②领导干部学习贯彻党的群众路线，不能停留在口头宣传上，而应 ，在实际工作中认真落实。③在淮阳东北与日军作战的时候，张将军 ，奋勇杀敌，带领部队挺近敌后，取得了战斗的胜利。

We _____________ all the other teams and ___________ the match.

When he was questioned about the necklace, he__________that he had ever seen it.

____? —- Maybe the possible solutions to the air pollution.