Despite the previous rounds of talks,no agreement____so far by the two sides.
has been reached
was reached
will reach
will have reached
本题考查动词的时态及语态。句意：尽管经过之前多轮淡判，但到目前为止双方没有达成任何协议。根据句中的时间状语so far一到目前为止"可知用现在完成时。主语agreement与reach为被动关系，故选A.