Complete the questions and answers.

Completed Questions and Answers:

1. A: Is it OK if I use your mobile?
2. B: Sure, all right.
3. A: Can I borrow your pen, please?
4. B: Sure, no problem, you can.
5. A: Is it OK if I use your laptop?
6. B: Yes, that's fine.
7. A: Can I borrow your book, please?
8. B: No, sorry, you can't.