Organised trips, festivals/eisteddfodau, fundraising campaigns, performances and musical rehearsals were most likely not to have taken place.
Tripiau wedi eu trefnu, gwyliau/eisteddfodau, ymgyrchoedd codi arian, perfformiadau ac ymarferion cerddorol oedd y gweithgareddau oedd fwyaf tebygol o fod wedi peidio â digwydd.