Rewrite each sentence, beginning as shown, so that the meaning stays the same

Question 5 Rewrite each sentence, beginning as shown, so that the meaning stays the same.
1. John doesn't always speak the truth, I'm afraid.
You can't ....................................................
2. Your hair is long . You ought to get it cut.
Your hair is long . It .......................................
3. Does this camera belong to you ?
Do .......................................
4. I will call the police if you don't leave me alone !
Unless .....................................................
5. Couldn't you find a better hotel ?
Is this...............................
6. It took us 3 hours to open the door.
We .............................................
7. Mark is too young to get married.
Mark is not ................................
8. He never has enough money.
He's always ...................
9. He could not afford to buy the car.
The car ...........................
10. She knows a lot more about it than I do.
I don't know ....................