问题
选择题
______ 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
答案
答案：B
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。