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.
Certainly. It would of necessity be a complex sentence.
gymnasium's
Gymnasium
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.
The German word for gymnasium is Turnhalle.
My physical education class in in the gymnasium.
Gymnasium am Ostring was created in 1860.
Gymnasium am Ostring ended in 2010.
Vossius Gymnasium was created in 1926.
Gymnasium Eppendorf was created in 1904.