Составьте во в Present Perfect.
4. we / pay?
5. Bill / phone?
6. what / Barbara tell the police?
7. why / Andy and Sarah / bring the children?
8. the secretary from your father's office / telephone?
9. where / the family in the flat upstairs / go?
11. the dogs / come back?
12. all those people / go home?
13. what / you / say to Mike?
14. you / hear the news?
15. the Sunday newspapers / arrive?
First, how to sit ? Not too far from the edge of the table, but not too close , and of course, do not put your elbows on the table. There is a small exception for women when it may briefly lean one elbow on the table , but only in case of emergency, for example, if the arm is tired . On the chair should sit up straight and do not bend over the plate . Here no exceptions exist.