A:Hello, Bobby ,It seems that I can't arrive at your home by 12 o'clock.
B:What happened? We're all expecting you , Hans , Dick , Archie...
A:I'm so sorry,I've been held up by the damn traffic jam for half an hour.I'd have arrived but for that.
B:I see. Where are you now,Li?
A:Thirty meters ahead is the Waterloo Bridge.
B:It's not far away from home, It's -let me see – about 20 minutes'walk,Can you walk here?
A:I've thought of that,but what can I do with my car?If only I had taken a taxi!
B:That's too bad,But don't worry.We'll put off dinner till one o'clock.
A:I'm so terribly sorry to keep you waiting.
B:It doesn't matter.Bye.
A:Bye.