单项选择题
A. changes B. change C. will change
A:Hi Bob, Id like to congratulate you on ...
A:Hi Bob, I'd like to congratulate you on the progress of Beihai project. B:（）
A. Fine,thank you. It is really an interesting project B. Thank you,John. It is really an interesting project C. My pleasure,It is really an interesting project
A:Oh. But why didnt he just own up and ...
A:Oh. But why didn't he just own up and tell someone? B:（）
A. So be careful with our job B. He was too scared that he would be fired, I suppose C. You should have told him that earlier
A:Here you are, Sir. B:（）A. All right.B. Ye...
A:Here you are, Sir. B:（）
A. All right. B. Yes,here we are C. Thank you very much
