Robot is of the same weight( )his father

Robot is of the same weight( )his father robert is___same weight as his father 为什么用of the,不直接用in啊? Robert and Richard are of the same weight.(保持句子原意) Robert is His weight is three times of mine. He and his father a__ the same His father is the ( )of the business怎么写 His father is the m________ of the business. the boy is afraid of.his.father.帮忙分析句子成分 his father is one of the c___in that Chinese restaurant Tom's father is the laziest of his parents The naughty boy is afraid of nobody ____ his father. What is the weight of a penis?