 Complete the following phrase:  For the 1968 Formula One season, after two years of driving the teams sole entry, Bruce McLaren was partnered by Denny Hulme. Hulme was world champion with the Brabham team in 1967 and had raced for McLaren that year in Can-Am, a North American sports car racing series. For the first round of the 1968 world championship  the South African Grand Prix, which was held in January, four months before the second round  only Hulme competed, using the M5A to finish fifth. The M7As first race was the Race of Champions at Brands Hatch, run to Formula One rules but not part of the world championship. There, McLaren won from pole position while Hulme was third. Another victory came at the non-championship BRDC International Trophy at Silverstone, this time with Hulme finishing first and McLaren second. In the M7As championship debut in Spain, Hulme was second and McLaren retired, then in 