They went______the schedule for the conference again and again until they felt satisfied with every detail of it.
【正确答案】 C
【答案解析】解析：本题考查动词短语搭配。go over，检查，复习；go up，上升；go out，出去；go by，走过，经过。结合句子的意思，对于会议安排应该是仔细检查，所以答案选C。