根据句意及汉语提示写出单词。
Let's meet at the school _______ (大门) at 8:00 a.m.
_______ (总统) Obama visited China last month.
The news is an ________ (鼓舞人心的事) to all of us.
In my opinion, this is his greatest ________ (艺术作品)．
The beautiful model is made of _______ (金属)．