When from top of the hill our school looks small.A. seenB. seeingC. seeD. to see

问题补充：

When from top of the hill, our school looks small.

A. seen

B. seeing

C. see

D. to see

答案：

(答案→)A. seen

B. seeing

C. see

D. to see

解析：考查非谓语动词。逻辑主语our school与see之间的关系为被动关系，故用过去分词，选A。