At the end of the meeting, it was announced that an agreement ______.
A.has been reachedB.had been reachedC.has reachedD.had reached在线课程B
解析：
思路
分析：“宣布”用了过去时，达成协议是在宣布之前，所以用过去的过去，即过去完成时。而协议又是被达成的，所以用B。【点评】本题考查动词时态。动词时态的选择要把握句中所暗示的时间状语，难度适中。