5In your notebook, complete the dialogues, using the words from exercises 1 and 4. Then act them out in pairs. 1 A: ExCUse me, can I _? B Yes, of course. A: Is it safe to ? B: No, it isn't. You because 2 CExCuse me, can I ? D Yes, of course. CIs it OK to _? D: Yes, but you 10