【题目】How did it come about ________ a quiet person should appear so wild today?
A. whether B. that C. if D. what
在线课程【答案】B
【解析】
试题分析:考查it做形式主语。陈述句语序：It came about that a quiet person should appear so wild today。it 做形式主语时，关系代词用that。 句意：为什么一个温柔的人今天变得如此暴躁？故选B。