【题目】I don’t think it was an accident at all. Your brother did it _____.
A.for purpose
B.in order
C.on purpose
D.out of order

【答案】C
【解析】A. for purpose 为了...目的；B. in order 有条理；C. on purpose故意的；D. out of order有毛病，出故障；句意：我觉得它根本不是事故。你弟弟故意做的。根据句意，故选C。