Some of the artist’s paintings are in this exhibition in our City Museum.A. in turnB. in

问题补充：

Some of the artist’s paintings are in this exhibition in our City Museum.

A. in turn

B. in public

C. on display

D. on duty

答案：

A. in turn

B. in public

(答案→)C. on display

D. on duty

解析：句意：在我们城市博物馆的这次展览中展出了一些艺术家的作品。in turn依次，轮流； in public在公共场合；on display展览。展出； on duty值日，值班。所以选C。