We allow in the woods but anyone is forbidden here.
A. to camp; to smoke
B. camping; smoking
C. to camp; smoking
D. camping; to smoke
网友回答
A. to camp; to smoke
B. camping; smoking
C. to camp; smoking
(答案→)D. camping; to smoke
解析：考查allow和forbid的用法。句意：我们允许在树林里面露营，但是任何人都被禁止在这儿抽烟。allow和forbid后接sb. to do或直接加v.-ing作宾语，所以第一空填camping，此处forbid使用了被动语态形式，即将forbid sb. to do中的sb.提前作主语。故选D项。