1. We had to borrow some money to expand our business.
2. You can call me John. We're all on first name terms here.
3. He is the head of the accounting department means that he's in charge of the accounting department.
4. You didn't know he was going to resign? No, I must have missed all the warning signs.
5. I'm tied up right now, can we talk in one hour?
6. Would it be convenient for you if we met at 11.30 on Friday morning?
7. I'm a very positive and optimistic person. I always look on the bright side.
8. Approximately 20% of my income goes on tax.