<prompt> Qedela umusho olandelayo: Wathola izindondo ezine emncintiswaneni weqembu le-C-2 eMqhudelwaneni Womhlaba we-ICF Canoe Slalom World Championships ngegolide 1979, isiliva 1981 nethusi amabili 1975,  <response>: 1977. 