问题
选择题
___ three times in a row, the boxer decided to make a fourth attempt, though．
A．Having defeated
B．To have defeated
C．Having been defeated
D．To defeat
答案
答案：C
考查非谓语动词做状语。主语the boxer与defeat之间是被动关系，且分词的动作发生在谓语动词之前，所以用现在分词的完成被动式。所以选C。