You can’t just listen to an English story and then recite it word-by-word. The hell, it’s even worse – after a few hours most of what you hear is forgotten completely, and all those new English phrases and expressions you may have heard are just dust in the wind ❗
Gabriela: Excuse me?
Penny: There's a coach link from Gatwick to Reading.
Gabriela: What is coach link?
Penny: A coach is a type of bus.
Gabriela: A coach is a type of bus?
Penny: Yes.
Gabriela: O.K.
Here, Gabriela is dealing with the problem of topic clarification by using such stock responses as 'I don't understand' or 'Excuse me', or by echoing part of the preceding utterance as an indication that she is in difficulty. These explicit signals are crucial in open-ended conversations such as these, as they will always elicit a repetition or reformulation and so give the listener both time and opportunity to make a relevant response.