【题目】_________to the house owner, the designer had a clear idea of what to do．
A. To talk B. Talked
C. Having talked D. Being talked
在线课程【答案】C
【解析】根据逻辑主语设计者（“the designer”）与非谓语动词谈论（“talk”）之间构成主动完成关系，即谈论的动作发生在设计有思路这个工作之前，因此用现在分词的完成式。句意：跟房主谈论过以后，设计者很清楚要做什么。