The manager,________ it clear to us that he didn’t agree with us ,left the meeting room.
A.who has madeB.having madeC.madeD.making在线课程B
解析：
having made现在分词的完成式表示分词动作发生在谓语动词left之前而且与句子主语The manager为主谓关系。句意：经理明确表示不同意我们的观点后离开了会议室。