Joseph: Excuse me. Have you got a minute
Ethan: The doctors are very busy...
Joseph: No, it"s not that. It"s just that ______. Have you thought of getting a drinks machine put in
Ethan: Uhm... I don"t think so, bur I"ll speak to the hospital management about that.
A．I"m rather thirsty after all this time B．if you need someone to help C．there"s too much traffic these days D．I missed the train this morning