He loves his parents deeply, are very kind to him.A. both of themB. both of whoC. whomD.

网友回答

A. both of them
B. both of who
C. whom
(答案→)D. both of whom
解析：定语从句考查题。先行词his parents关系词both of whom在从句中做主语。句意：他深爱他的父母，他们对他也非常好。