of danger in the street last night, she had to go home, with a friend following her.
A. To be warned
B. Warned
C. Having warned
D. Warning
网友回答
A. To be warned
(答案→)B. Warned
C. Having warned
D. Warning
解析：考查非谓语动词。warned 过去分词作状语，表被动
句意为，被警告这条街晚上很危险，她只能和他的朋友一起回家。