问题补充：
As is known to all, nobody in the world is perfect. Everyone has his/her own .
A. manners
B. faults
C. origins
D. benefits
答案：
A. manners
(答案→)B. faults
C. origins
D. benefits
解析：考查名词：A. manners礼貌，方式B. faults错误C. origins起源D. benefits益处，句意：众所周知，世界上没有人是完美的，每个人都有错误。选B。
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