（ ）from the top of the tower ,the south foot of the mountain is a sea of the trees

题目

（ ）from the top of the tower ,the south foot of the mountain is a sea of the trees
A Seen B Seeing C Having seen D To see

答案

答案是A
可以解释为：if / when it is seen from the top of the tower - -- - - .
你的是分词结构做状语.我的是句子结构做状语.