【单选题】Isolated from the outside world, the villager would often talk with his ______ friends when night fell.
【单选题】以下只有在使用时才为该类型变量分配内存的存储类说明是 ______ 。
【单选题】It was three o’clock in the afternoon _____ a villager telephoned to tell me the surprising discovery of an ancient tomb.
【单选题】以下只有在使用时才为该类型变量分配存储单元的存储类型说明是( )。