【题目】John invited about 40 people to his wedding, most of ______ are family members.
A.them
B.that
C.which
D.whom

【答案】D
【解析】句意：John邀请了大约40人参加了她的婚礼，大部分是家庭成员。most of ______ are family members.是一个非限定性定语从句，关系词that只能引导限定性定语从句，排除；先行词是people，which 只能指物，排除选项C；如果用them， 则逗号之后应该加上一个连词and，排除。故选D。