参考答案：D

解析：[听力原文]
What did the speaker ask his guest to do when he was too busy to go home
[试题分析]本题考查考生对细节的理解。
[关键词句]…help himself to food and drink
[详细解答]根据关键词语，我们得知，“我”告诉朋友自己进厨房，弄点吃的喝的，故D最合适。