单选题 ______ his home, he decided to phone his father again.
  • A. Not finding
  • B. Finding not
  • C. Not having found
  • D. Having not found
【正确答案】 C
【答案解析】此题用分词短语的完成形式作原因状语，表示在主句谓语动词之前发生的动作。否定词not放在句首。