The foreign visitors couldn’t help by the beautiful scenery of the Great Wall.
A. striking
B. to be struck
C. being struck
D. to strike
网友回答
A. striking
B. to be struck
(答案→)C. being struck
D. to strike
解析：考查短语。couldn’t help doing禁不住做某事，句意：这些外国游客禁不住被长城的美丽风景打动了。这里游客是被打动的对象，故用被动语态，选C。