After years’ training,the dogs were made completely used ________ in the darkness under fallen buildings to search for the living people.A.to stay \x05B.staying C.stay D.to staying请帮忙分析一下结构好吗

AFTER MANY YEARS怎么样 TWENTY YEARS AFTER怎么样 10 Years After 歌词 after years and years of bad after 10 years after的用法. three years after 和after three years 区别? CODA THIRTY YEARS AFTER怎么样 《After twenty years》英语读后感 After twenty years的意思 after dad died ten years Remember or forget after years in ten years和after ten years 有什么区别, 两年后是after two years还是in two years? he returned twenty years after 二十年后他回来了 twenty years after能改为after twenty years吗 War started again after years of p() Hope after three years,··· After twenty years的续写 TWENTY YEARS AFTER FORGOTTEN BOOKS怎么样