They're blue flowers 就此提出一般疑问句怎么提?格式为______ ________ blue flowers?

They're blue flowers 就此提出一般疑问句怎么提?格式为______ ________ blue flowers?
They're blue flowers 就此提出一般疑问句怎么提?
格式为______ ________ blue flowers?

They're blue flowers 就此提出一般疑问句怎么提?格式为______ ________ blue flowers?
are they blue flowers?

Are they

Which are是特殊疑问句
Are they 是一般疑问句

are they blue flowers?

Are they