第1个回答 2006-04-22
当然是 I'm sorry to have kept you waiting
第2个回答 2006-04-22
Sorry to have kept you waiting本回答被提问者采纳
第3个回答 2006-04-22
Sorry for letting you wait so long.
第4个回答 2006-04-22
Let you long etc.
参考资料:金山翻译
第5个回答 2006-04-22
I'm sorry to keep you waitting for long