.
Who is the person is talking about the accident happened on Highway 104?
A. which, which
B. who, what
C. that, that
D. what, what
网友回答
A. which, which
B. who, what
(答案→)C. that, that
D. what, what
解析：考查定语从句。先行词是人时，定语从句用who或that引导；先行词是物时，引导词用that或which。the person是先行词，第一空用who或that作主语；what不能引导定语从句，排除A、B、D。故选C。