Representatives from the companies indicated that they should go

Representatives from the companies indicated that they should go on working together in（ ）.
A、unity
B、entity
C、partners
D、partnership
【正确答案】：D
【题目解析】：A.unity：统一，整体；B.entity：实体；C.partner：伙伴，同伙；D.partnership：合作伙伴关系，常用work in partnership（with sb.），根据用法，应该选D。句意：那几个公司的代表指出，他们需要继续通力合作。