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
网友回答
A. for purpose
B. in order
(答案→)C. on purpose
D. out of order
解析：句意：我认为这根本就不是个意外。你弟弟是故意这么做的。
A for purpose of为了…的目的 B in order 有序地 C on purpose 故意地 D 出故障；次序颠倒。，介词短语作状语时，习惯放在动词的后面，如：He didn’t do it accidentally. He did it on purpose,故选C。