I decided to go into town because I had nothing better to do. (having)
13. I decided to go into town because I had nothing better to do. (having) .......................................................................................................................
14. We moved quietly so as not to disturb anyone. (wanting) ........................................................................................................................
15. I wish I could help you but I can do very little. (while) ........................................................................................................................
16. Because Hal is so conscientious, he rarely leaves the office early. (being) .........................................................................................................................
17. All patients are examined when they are admitted to hospital. (on) ...............................................................................................................