According to the American law, parents must keep their kids except when they are in schoo

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A. safety
(答案→)B. pany
C. friend
D. partner
解析：
试题分析:考查名词辨析。A安全；B陪伴；C朋友；D伙伴。固定短语keep sb pany “陪同某人”，所以B选项正确。句意：根据美国法律规定，父母必须要陪同孩子除非在他们上学的时候。