单选题 I don't think you'll change his mind; once he's decided on something he tends to ______ it.
【正确答案】 A
【答案解析】本题的考点是动词短语的固定搭配。A项意为“坚持”，B项意为“遵守”，C项意为“照做”，D项意为“继续”。根据上下文，选项A为正确答案。