The sign on the birds’cage is interesting.（改为否定句）

The sign on the birds’cage is interesting.（改为否定句） The sign on the birds' cage is interesting.怎么改 The sign ( on the birds' cage） is interesting 对括号部分提问 The sign on the birds' cage is interesting.(改一般疑问句） The sign on the birds' cage is interesting.is为什么要改成are The sign on the birds’ cage is interesting.(对划线部分提问) The sign on the birds' cage means we should keep quiet 否定句 The sign on the birds cage is intereting一般疑问句 The sign on the birds'cage means ‘Be quiet'. （改为一般疑问句） is ,panda ,on ,sign ,interesting ,the ,cage ,the .排列顺序 Does the sign on the cage interesting? 连词成句 ：is ,panda's ,on ,sign ,interesting ,the ,cage ,the