Both the girl and her dog were crossing the street were hit by a ing car.
A. which
B. what
C. that
D. they
网友回答
A. which
B. what
(答案→)C. that
D. they
解析：考查定语从句的关系词that用法。当先行词既有人又有物的时候，如果句子缺少关系代词，就使用that。本题的先行词Both the girl and her dog既有人又有物，后面的句子缺少主语，故C正确。