【题目】The company and the effect brought about did great good to our business in the market.
A. it B. which
C. that D. what
在线课程【答案】A
【解析】考查代词。句中的it代指the company，it brought about为定语从句，先行词the effect作brought about的宾语，故后省略了关系词which或that。句意：这家公司及其所带来的影响对我们的业务有很大的好处。故选A。