问题补充：
it two days ago when you arrived home late that you came across her?
A. Did
B. Was
C. Does
D. Is
答案：
A. Did
(答案→)B. Was
C. Does
D. Is
解析：考察强调句，根据句子结构可知，该句为强调句的一般疑问句式，去掉it was that 以后句子结构完成，不缺少成分，即you came across her two days ago when you arrived home late.
