广西桂林旅游景点地图:找错!快!HELP!!!
来源:百度文库 编辑:神马品牌网 时间:2024/05/12 18:17:38
He sitted there for a long time without doing anything.
sit-----sat
He has been sitting there for a long time without doing anything.
sitted->was sitted
sitted---has sat
sitted 应该是 sat吧
sitted改为sit