qiao811211
幼苗
共回答了23个问题采纳率:82.6% 举报
可以有很多种表达的
1.I am sorry to have kept you waiting long.
2.I am sorry to have kept you waiting so long.
3.I am sorry to have kept you waiting.
4.I am very sorry to have kept you waiting.
Sorry to have kept you waiting.
Sorry to have kept you waiting long.
Sorry to have kept you waiting so long.
1年前
5