We requested that the superintendent of the building clean up the storage room in the basement so that the children (had) enough space for their bicycles.
括号里的是错的。应该改成might have，为什么不能说could have呢？？？
谢谢！！！
參考答案:我觉得两个可以,只是语气不同.might的语气比could 弱.请求的话用might比较客气
