Believe it or not,the Great Wall,which _______ by people,should be protected at once.
问题描述：
Believe it or not,the Great Wall,which _______ by people,should be protected at once.
A.has been destroyed B.is destroyed C.was destroyed D.is being destroyed
要分析
答
选D 现在进行时+被动语态
释义：信不信由你,正在被人们破坏的长城应该立刻被保护起来