An agent should be a person who is trusted and _______ on and is

An agent should be a person who is trusted and _______ on and is regarded as part of the exporter's selling branches.
A、relying
B、reliable
C、reliant
D、relied
【正确答案】：D
【题目解析】：be relied on被依赖，本题使用被动语态。
句意：代理人应该是一个值得信任和依赖的人，并被视为出口商销售分支机构的一部分。