The experiment ___ by scientists in New York turned out to be a great success. A. being conducted B
问题描述：
The experiment ___ by scientists in New York turned out to be a great success. A. being conducted B
The experiment ___ by scientists in New York turned out to be a great success.
A. being conducted B. to be conductedC. having been conductedD. conducted
请问为何不选c
答
现在分词的完成式不能做后置定语~这是语法规则 所以不选C
答案应该是D 过去分词做后置定语