What are they doing?Are they have lunch?这2句话哪里有问题吗

What are they doing?Are they have lunch?这2句话哪里有问题吗 What are they doing?Are they have a meeting?这句话有错吗?哪儿错了? They are to have for lunch.这句话对吗?为什么? What are they doing? what are they doing what are they doing now? They are--- 英语what are they doing what are they doing?急用! what are they going to have a lunch?的意思 （可以有回答形式 what are you doing now?They are--- Are they perparing ____ (have)lunch? They are busy ________ (have) lunch.