1. Can I help you?
2. Just what I need!
3. Would you please do me a favor?
4. I'd be glad to. What can I do?
5. Sorry, could you wait a minute? I'm tied up now.
6. Please don't bother me. Can't you see I am busy?
7. Would you please pick up the cassette tapes?
8. Here is the cassette tape. Would that do?
9. Wouldn't you copy the contract?
10. I want to download this file from the Internet.
11. Would you mind if I use your computer this evening?
12. It is OK if you take care of it.
13. Thanks a lot for your help.
14. That's very kind of you.
15. I owe your one.