他在数学竞赛中表现杰出，获得了金牌。

He won the gold medal for his ___outstanding performance in the math competition.

有三本需要归还给图书馆的未还书籍。

There are three ___outstanding books that need to be returned to the library.

她的表演在整场音乐会中格外突出。

Her performance was the most ___outstanding part of the concert.