F: Hey Mike, good to have you back. You look exhausted. ,M: Hi, Mary. Yeah. I'm totally beat. I can barely keep my eyes open. ,F: Was it a rough trip? ,M: Well, it was actually pretty productive. But all the flying really got to me. ,F: Oh, jet lag. ,M: Yep. I flew from Beijing to Boston for a meeting and then got on a plane to go to the trade fair in Frankfurt. Then back to Beijing before catching a train back here to Shanghai. ,F: Wow, that's a lot of traveling. No wonder you're exhausted. ,M: The worst thing was adjusting to the time zones. It's so hard to get used to the difference. ,F: Yeah, it's hard. You know jet lag only hits if you travel east west or west east. You could fly from Germany to Cape Town in South Africa and you wouldn't feel a thing.
(A) M: Why do you mention America? I haven't been to America on this trip. (B) M: If only you had reminded me of flying from Germany earlier. (C) M: Why do you mention Britain? I flew directly from Beijing to Germany on this trip. (D) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that?
B