---Do you know the danger caused by smoking?
---Yes, too many cigarettes can lead to lung cancer.
A. a person suffers from
B. a person to suffer from
C. a person being suffered from
D. a person suffering from
网友回答
A. a person suffers from
B. a person to suffer from
C. a person being suffered from
(答案→)D. a person suffering from
解析：考查非谓语动词。lead to导致，to为介词，故后接-ving，根据句意为主动关系，故选D。