【题目】Tom and his family decided to do something for children in their community, had no place to live in.
A.whichB.thatC.whereD.who
在线课程【答案】D
【解析】
考查who作定语从句关系代词。句意：汤姆和他的家人决定为社区中没有地方可住的孩子们做些什么。分析句子可知，该空之后是一个非限定性定语从句，children为先行词，且在从句中做主语，应使用关系代词who引导。选择D。