单选题 The policeman ______ the facts again and again, but could not piece them together.
【正确答案】 A
【答案解析】短语辨析。go over受欢迎, 重温, 察看; go on 继续； go with 伴随，与…约会，与…相配； go after 追逐，追求。因此A为正确答案。