You have to get rid of smoking you may die of lung cancer.A. andB. butC. soD. otherwise

问题补充：

You have to get rid of smoking, you may die of lung cancer.

A. and

B. but

C. so

D. otherwise

答案：

A. and

B. but

C. so

(答案→)D. otherwise

解析：根据句意“你必须戒掉吸烟，否则你会死于肺癌。”可知，此处应该表示“否则”的意思，所以选择D。