【题目】Mary was much kinder to Jack than she was to the others，__________，of course, made all the others upset.
A. who B. which C. what D. that
在线课程【答案】B
【解析】句意：玛丽对杰克要比对 其他人好，这当然令其他人不快。 分析题干可知，本题为非限定性定 语从句，关系代词指代整个主句的 意思，故选项B正确。A项指人；C 项不能引导定语从句；D项不能引 导非限定性定语从句。