warning;1 biock of memory have not been deall ocated
问题描述：
warning;1 biock of memory have not been deall ocated
答
have been in 表示在某个地方居住或者呆过一段时间,可以加一段时间
have been to 仅仅表示到过 没有持续一段时间的意思 不能加时间