I couldn’tcry while I was watching the movie “Titanic”.A. help toB. helpC. help but to D.

问题补充：

I couldn’tcry while I was watching the movie “Titanic”.

A. help to

B. help

C. help but to

D. help but

答案：

A. help to

B. help

C. help but to

(答案→)D. help but

解析：考察句式couldn’t help but 禁不住,忍不住,后面接动词原形.句意:当我看电影泰坦尼克号时,我禁不住哭了起来.故选D.