Your toy panda looks very lovely. — __________.

依次填入下列各句横线处的成语，最恰当的一组是 ①特别是傍近铁路的河堤，更是牢固严实， ，简直连个蚂蚁洞的孔隙也没有给洪水留下。②我军万船齐发，攻破“千里江防”，很快就占领了蒋介石自以为防守得 的南京城。③潮汛已经过去了，大坝仍然屹立不动， 。

Please _________ the light when you leave the classroom.

achieve a lot when we learn to let our differences unite, rather than _________us.

Mum, could you buy me an MP4 like this— Certainly, we can buy ______ one than this, but ______ this.