THE Court of Appeal yesterday quashed the jail sentences of two teenagers, instead sending them to a training centre. Ma Wai-kit, 16, who took part in three robberies, and Cheung Kam-tak, 17, who took part in one and handled stolen goods, had admitted the charges. They were sentenced to 51/2 years and five years' jail, respectively, by Deputy Judge Burrell. Their accomplices, Cheung Wing-wai, 30, who admitted two of the holdups, and Tsui Ying-hung, 33, who admitted one, were each given a seven-year jail term. The court heard that the Mannings shop in Repulse Bay was robbed on November 3 and 14, 1991, and a Wellcome supermarket in Nathan Road was raided on January 19, 1992. Robbers with knives seized nearly $140,000 cash. Counsel for the two teenagers, Mr Luke McGuinniety, submitted that his clients had been under the influence of older men. Crown Counsel Mr Philip Ross argued for a deterrent sentence.