The English teather told us this morning that we an exam at the end of this month.

问题描述:

The English teather told us this morning that we an exam at the end of this month.
A will have B would have C have had D had had

B would have
因为主句用过去式 而the end of this month是将来时时间状语
所以用过去将来
整个句子的意思就是老师今天早上通知我们,我们月底将有场考试~