To fetch water before breakfast seemed to me a rule .
A. to never break
B. never to have broken
C. never to be broken
D. never to be breaking
网友回答
A. to never break
B. never to have broken
(答案→)C. never to be broken
D. never to be breaking
解析：本题考查非谓语动词。rule 不能被打破。表被动关系所以要用be broken，故选C。