1. Everyone was surprised to see geoff leave the party early
=> To everyone's surprise, Geoff left the party early.
2. I don't go to church every sunday any longer.
=> I used to go to church every Sunday
3. I sent my friend a letter in london last week.
=> A letter was sent to my friend in London last week.
4. I last saw him went I was a student
=> I haven't seen him since I was a student
5. Smoking is not allowed in the ward
=> Would you mind not smoking in the ward?