De or het dansrepetitie?

The correct Dutch article is:

de dansrepetitie

Rule Words ending in -tie and -sie: almost always de. See the rule

How to use dansrepetitie

the dansrepetitiede dansrepetitie
this dansrepetitiedeze dansrepetitie
that dansrepetitiedie dansrepetitie
our dansrepetitieonze dansrepetitie
your dansrepetitiejouw dansrepetitie
every dansrepetitieelke dansrepetitie
which dansrepetitie?welke dansrepetitie?
a big dansrepetitie / the big dansrepetitieeen grote dansrepetitie, de grote dansrepetitie