A. went through B. went over

C. went on D. went out

【答案】A

【解析】

考查动词短语辨析。句意：你永远不知道为了教育孩子她经历了什么。短语go through经历；go over复习，检查；go on进行；go out外出；本句中what引导宾语从句并在句中做go through的宾语。故A项正确。