-------we were having at the party?A.what wonderful time B.w

感叹句型：
What + n.(adj.+ n.) + 陈述句(主语+谓语) !
How + adj./adv.+ 陈述句(主语+谓语) !
感叹对象是wonderful time ,是名词,所以用what ,而且time是可数名词,要加冠词“ a”.