They _______for three hours now and neither party seems to be wi

They _______for three hours now and neither party seems to be willing to compromise.
A、have been negotiating
B、negotiated
C、were negotiated
D、are negotiating
【正确答案】：A
【题目解析】：现在完成进行时表示动作从某一时间开始，一直持续到现在，或者刚刚终止，或者可能仍然要继续下去。故选A。