单选题 It seems to the writer that the most enjoyable part of being a host is ______.

【正确答案】 B
【答案解析】[考点] 推断题
[解析] The only people I ask to stay with me are those I like.But I am still more delighted when they go,and the house is ours again.说明作者愿意请喜欢的朋友到家里来,但朋友离开时他更高兴,由此可见他最高兴的时刻应是朋友出门的时候,故选B。