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。