1. Do you know Deborah. She is coming for dinner tomorrow.
2. Who's that man. He's been following us for the past twenty minutes.
3. You always find fault with everybody else, but yourself.
4. What sport do they practice ?They look great!
5. They have tried to contact you for the whole week, but in vain.
6. My friend and I know each other for over fifteen years
7. She has been sewing the dress since early this morning in order to please the customer.
8. I have never visited Africa, but I have travelled to South America several times.
9. Are you doing anything tonight? Do you think about organizing a party?
10. Did you finish writing? No, we just have a rest.