The guests________Mrs,John decided to take a good rest.

题目

The guests________Mrs,John decided to take a good rest.
A having left B have left C went D going

答案

A having left
首先应该判断句子谓语是decided
那么这个句子很明显是一个独立主格结构B C排除
然后考查时态顺序
客人离开后mrs john才能休息
所以客人离开是在decided之前 应该用过去完成时
再改成现在分词 having left 即可