<prompt> Qedela umusho olandelayo: Wathola izindondo ezimbili emncintiswaneni we-C-2 e-ICF Canoe Slalom World Championships ngesiliva ngo-1975 nethusi ngo-1979. Wabuye wathola izindondo ezine emdlalweni weqembu le-C-2 ngegolide 1979, isiliva 1981 nezethusi ezimbili 1975,  <response>: 1977. 