How old ?

Make questions and answers using these words:

For example: Car / 5 = The car is five years old.
  1. Dog / 9
  2. Computer / 3
  3. Baby girl / 1
  4. Shoes / 2
  5. House / 137
  6. Bike / 10
  7. Girls / 13
  8. Trousers / 1
  9. Elephant / 35
  10. Trees / 53
  11. Andy / 14
  12. Sun / 10,000,000

How many did you get right?