1. What are you listening? Oh, it's a new CD. I bought it yesterday.
2. How did the accident happen? - Well, I was not careful enough to see it.
3. Shall we go and see the new Bond film next week? Yes, that's (или it's) a great idea.
4. Where are you going? I'm going over there to see the painting.
5. Не понятно что здесь требуется. В любом случае так не обращаются, если форма обращения не грубая.
1) Hello, may I ask you, please? Yes, please. How can I help you?
2) Hello, can you hear me? (типа Але! Слышите меня?) Yes, I can. How can I help you?
И таких вариантов еще штуки 3-4. Так что выбирайте сами.....