补全对话。根据对话内容，从右边方框中选出适当的选项补全对话。 并将选项的编号字母依次填在答题卡的相应位置。 （共 4 小题，每小题 1分；计 4 分） David: Excuse me. Waitress: Yes? 小题1: David: I ordered my dish half an hour ago, but I haven’t got it yet. Waitress: 小题2: I’m going to see if it’s ready. (The waitress comes back from the kitchen. ) David: Sir, I’ve just checked with the kitchen and your food will come up next. 小题3: David: Thank you. Waitress: Please enjoy your food. Again, I’m sorry that I have kept you waiting so long. David: 小题4: A．Oh, here it comes. B．It doesn’t matter. C．I’m sorry for that. D．What can I do for you?