At the end of the meeting ,it was announced that an agreement-------.Ahas been reachedB had been reached C has reached D had reached

At the end of the meeting ,it was announced that an agreement-------.Ahas been reachedB had been reached C has reached D had reached
At the end of the meeting ,it was announced that an agreement-------.Ahas been reached
B had been reached C has reached D had reached

At the end of the meeting ,it was announced that an agreement-------.Ahas been reachedB had been reached C has reached D had reached
选B
一、根据时态,was标志是过去时,排除A、C,有has怎么说都是现在时
二、然后是,协议已经决定,被决定,找被动态,只有B有
所以选B

什么答案,这明明是2007年江苏高考第23题，选过去完成时的被动语态那个选项，也就是had been reached,也就是B.
详细解释：an agreement 协议，在协议达成之后，得到通知。