from the top of the mountain we found the city more beautiful.A. SeenB. Having been seen

问题补充：

from the top of the mountain, we found the city more beautiful.

A. Seen

B. Having been seen

C. Seeing

D. Being seen

答案：

A. Seen

B. Having been seen

(答案→)C. Seeing

D. Being seen

解析：考查分词做状语用法。See与后面句中主语we构成主动关系，使用现在分词做状语。句意：从山顶上看，我们发现这座城市更美丽。