Kate and Sue have colds.(改为一般疑问句)

问题描述:

Kate and Sue have colds.(改为一般疑问句)
()Kate and Sue ()colds?

Do havedo?感觉不通啊,别扭have 是动词,改成一般疑问句时需加 助动词do
而主语又是复数,所以用do