依次填入下列各句横线处的成语，最恰当的一组是（ ）（1）刚刚参加体坛风云人物颁奖的张继科在开赛当日 赶到赛场，结果1比3爆冷输给了小将梁靖崑。（2）近日一段廊坊固安老人孤身骑三轮车寻找走失儿子， 历经千辛万苦的视频，让很多网友为母爱的伟大而感动。（3）民警找到对山况熟悉的守林人卓金龙，警民联手在深山中 近7 公里，耗时近6小时，终于找到了6 名驴友。

For a moment nothing happened then all shouting together.

How about going surfing this Sunday—________. I love sports and getting close to thesea.

You will soon get out of practice ______ you play the piano regularly.

How many ______ are there in your school.