博物馆里正在展出许多老式飞机。
Many old aircraft are ___on ___display at the museum.
音乐博览会上展出了一些新乐器。
There were some new musical instruments ___on ___display at the music fair.
这位艺术家的最新画作正在美术馆展出。
The artist's latest paintings are ___on ___display in the gallery.