单选题 Companies can maintain good business relations by abiding by their promises and agreements.
【正确答案】 C
【答案解析】该句意为：公司只要信守诺言并履行协议就能保持良好的业务关系。abide by的意思是“遵守”。come up with：想到，想出来；break away from：脱离，挣脱；live up to：达到，实现，无愧于；get rid of：摆脱，扔掉，甩掉。