of danger in the street at night, she had to go home, with a friend her. A. Warned; accom

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A. Warned; acpanied
B. Warning; acpanying
C. Having warned; acpanied
(答案→)D. Having been warned; acpanying
解析：考查非谓语动词的用法。She与warn构成被动关系，所以使用过去分词或者having been done,第二空的friend与acpany构成主动关系，使用现在分词。句意：因为被警告晚上的街上有危险，所以她不得不让一个朋友陪她一起回家。选D。