单选题
They are talking about the people and the things ______ they saw on their way home.
【正确答案】
B
【答案解析】[解析] 在定语从句中，如果先行词既有人又有物时，用关系代词that，而不用which或who。例如：The people and the things that were lost in this accident have been found．(在这场事故中失踪的人和物品已经被找到了。)