【正确答案】 A

【答案解析】根据上句中的"Take it for granted that he likes everything and he probably will"，就可知此处应选择supposed。supposed引导状语从句，作“假如，如果”讲，例如：Supposed there is no opposition， we shall hold the meeting here．假如没有反对意见，我们就在这儿开会。prove作“证明，证实”讲，例如:There wasn't enough evidence to prove his guilt．没有足够的证据证明他有罪。consider作“考虑，细想；认为，把……看做；关心，考虑到”讲，例如：I consider it a valuable course in my university career．我认为那是我大学生涯中的一段宝贵的经历。relate作“使互相关联；讲述，叙述”讲，例如：He related just how the accident had occurred．他描述了这次事故是怎样发生的。