单选题 He asked no one's permission; he did it ______ his own account.

【正确答案】 C

【答案解析】(on one's own account为自己的利益)。句意为：他没有征得大家的许可，做这件事是为了自己的利益。A．for为了；D．with和……在一起；D．from来自。