A. I'm sorry you can't. B. Sure, it's my pleasure.
C. Well, take things easy. D. I'll be glad to.
E. Thank you. F. Really?
G. You're always welcome. H. I'm sorry to hear that.
Wang: May I come in?
Black: Come in please. Won't you have a seat, Mr. Wang?
Wang:{{U}} (56) {{/U}}. Could you spare me a few minutes, Professor Black?
Black:{{U}} (57) {{/U}}. What can I do for you?
Wang: I wonder if I could hand in my essay next Monday, because I had a bad headache yesterday.
Black:{{U}} (58) {{/U}}. Is it any better now?
Wang: I'm afraid not. But I'm sure it's nothing serious. I'll be all right soon.
Black:{{U}} (59) {{/U}}. Hand in your essay any time next week.
Wang: Thank you.
Black: Mr. Wang, would you mind telling Mr. Gao that I'd like to see him tomorrow morning? I've got something to discuss with him.
Wang:{{U}} (60) {{/U}}. Good-bye, professor.
Black: Good-bye.