The boy was made to the explanation(解释，说明 process of explaining) .

______ students should be given more free time is suggested by many experts and welcomed by kids in school．

下列各句中加点的成语的使用全都正确的一项是①正是严冬天气，彤云密布，朔风渐起，却早沸沸扬扬卷下一天大雪来。②中国诗一蹴而至崇高的境界，以后就缺少变化，而且逐渐腐化，这种现象在中国文化里数见不鲜。③校运动会上，他以绝对优势荣获800米比赛第一名，这真是一件大快人心的事。④近十年来，我这个普通焊工，不敢说目无全牛，但凡电焊上的活，没有能难住我的。⑤古希腊的德勒菲的著名巫师在对宇宙未来的预言上以模棱两可而臭名昭著。⑥日薄西山的时候，我们终于到达了目的地。

What’re you ____________— My husband’s health problem ___________ me a lot.

With the _____________ of science and technology, people can talk with each other much more conveniently than before.–But China is still a __________ country, people have to work hard to live a better life.