问题补充：
How did it that everyone knows my decision? I had been keeping the information to myself.
A. come across
B. come on
C. come about
D. come out
答案：
A. come across
B. come on
(答案→)C. come about
D. come out
解析： 考查短语辨析，come across 偶然遇见，come on 加油，come about 发生，come out开花，出版，句意：这事是怎么发生的呀每个人都知道了我的决定？我一直为我自己保留着这个信息。故选C。
