After years’ training,the dogs were made completely used ---

D.to staying.主要考查make 和 used to doing sth和被动句子的用法.
1.make+sb +形容词,“used to doing sth 习惯做某事”短语充当make的形容词成分
2.made的被动用法 主动句式为：After years'training,we made the dog comletely used to staying in the darkness under fallen buidings to search for the living people.