It’s not until no enemies were left that they .
A. did not stop fighting
B. did stop fighting
C. stopped fighting
D. have stopped fighting
网友回答
A. did not stop fighting
B. did stop fighting
(答案→)C. stopped fighting
D. have stopped fighting
解析：这是 “not...until...”结构的强调形式，not在前面出现，后面不能再出现