Everyone knows that the sun in the east.

What a nice meal! It’s really kind of you to invite us.— I’m glad you liked it.

The children are ____when they hear the____news.

依次填入下列横线处的词语，最恰当的一组是( )办公人员的座椅高度是非常有讲究的。专家　　　，许多人办公座椅的高度都存在一定问题，久坐会　　　疲劳感，并出现腰酸背痛的毛病。正确的做法是:首先根据工作性质把办公桌调整到一个　　　的高度，然后再依据自身情况来调整座椅的高度。

Lucy is careless. But Tom doesn’t do his homework _______ Lucy.