问题
选择题
__________of danger in the street at night, she had to go home, with a friend_________ her.
A．Warned, followed
B．Warning, following
C．Having warned, following
D．Having been warned, following
答案
答案：D
考察非谓语动词，第一空和第二空都是作状语，第一空的warn与后面的逻辑主语之间是被动关系，所以排除BC,第二空的follow与他的逻辑主语 a friend 之间是主动关系，所以选择following，排除A，所以选择D
句意为，已经被警告晚上马路上很危险，她需要有一个朋友跟她一起回家。