—————good time they are having!(how/what a/what/how a)并符上选择的理由,

问题描述:

—————good time they are having!(how/what a/what/how a)并符上选择的理由,

what a good time they are having!
如果是用how的话 应该是how +形容词+冠词,所以这边的how 和how a 排除
然后what的话,应该是what+冠词+形容词