His use of colour, light and form quickly departed from the conventional style of his _____ as he developed his own technique.
句意: 他对颜色、 灯光、 外形的使用很快与他的前辈的传统形式相背离, 他已逐步培养出自己的风格。 descendants后代; 晚辈。 successors继承人; 接班人。 predecessors前辈; 前人。 ancestors祖先; 祖宗。 由于predecessors最符合句意,故正确答案为C。