When ______ from a distance ,to tell the truth,the temple looks like a bird cage.
问题描述：
When ______ from a distance ,to tell the truth,the temple looks like a bird cage.
A seeing B being seen C seen D see
答
C seen
这是：When it is seen from a distance的省略.
不是正在进行的动作,所以进行时不合适.