问题补充:
单选题________withhisworkintheSatelliteLaunchSite,hecouldnotspareanytimetostaywithhisparentsthoughtheyareveryold.A.As occupyingB.OccupiedC.Having occupiedD.To occupy
答案:
B解析考查过去分词作状语。be occupied with 忙于做某事,句意:他忙于他的工作在卫星发射基地,他不能抽出时间和他的父母在一起,尽管他们年纪大了。故选B。