— you got to know I traveled to USA?
—Through one of your colleagues.
A. Where it was that
B. When was it that
C. How was it that
D. Why was it that
网友回答
A. Where it was that
B. When was it that
(答案→)C. How was it that
D. Why was it that
解析： 根据答语“Through one of your colleagues.”可知应用表示方式的疑问词how，并用问句形式。