The teacher is much kinder to Tom , , certainly, makes the others very angry.
A. who
B. which
C. that
D. what
网友回答
A. who
(答案→)B. which
C. that
D. what
解析：考查定语从句。本题中的which指代前面一句话的内容，在后面的句子中做主语。引导的是非限制性定语从句。That不能引导非限制性定语从句，who的先行词只能是人。What不能引导非限制性定语从句。句意：老师对Tom更好，这件事情让其它人很生气。故B正确。