问题详情

Guest: Oh, I hadn"t realized how late it was. I"m afraid I"ll have to be going.Host: Oh, not yet. I"m just going to make some coffee.Guest: ______ , though I"d really love to stay. I"ve got to be up by six tomorrow morning, unfortunately. Thank you for a wonderful party.A.I"m sorry, but I mustB.Excuse me, but I have to goC.Pardon me, but I should goD.It"s a pity, but no way out