问题补充：
of danger in the street at night, she had to go home, with a friend her.
A. Warned; accompanied
B. Warning; accompanying
C. Having warned; accompanied
D. Having been warned; accompanying
答案：
A. Warned; accompanied
B. Warning; accompanying
C. Having warned; accompanied
(答案→)D. Having been warned; accompanying
解析：考查非谓语动词。主语she与warn之间是被动关系，故排除B、C项；在with结构中，逻辑主语a friend与accompany之间是主动关系，故应用现在分词。所以D项正确。
