One of the defintions of the word 'complex' is 'made up of two or more parts'. So a complex gymnasium would be a gym that has areas to play more than one sport.
Gymnasium
gymnasium's
Certainly. It would of necessity be a complex sentence.
A gymnasium is to do gymnastics and be safe doing it
The possessive form for the noun gymnasium is gymnasium's.Example: The gymnasium's floor was refinished over the summer.
The gymnasium.
My physical education class in in the gymnasium.
The German word for gymnasium is Turnhalle.
Gymnasium Paulinum was created in 797.
Gymnasium Haganum was created in 1394.
Gymnasium Vukovar was created in 1891.
Svendborg Gymnasium was created in 1872.