To smoke a cigarette after meals seems to him a habit .
A. to never break
B. never to have broken
C. never to be breaking
D. never to be broken
网友回答
A. to never break
B. never to have broken
C. never to be breaking
(答案→)D. never to be broken
解析：考查不定式的否定：句意：饭后抽根香烟似乎对他来说是不能破坏的习惯。这里用不定式做短语，否定词never放在不定式前面，habit和break是被动关系，选D。