Ngokuthuthuka kwezikhathi, ngokuthuthuka komnotho, ukuthuthukiswa kwezimboni, ukukhuphuka kwamabhizinisi amancane naphakathi nendawo, ukwenyuka kwezindleko zabasebenzi, ukwenziwa ngcono kwezinga lokuphila kwabantu kanye namazinga aphezulu naphakeme emvelo. ..
Funda kabanzi