Помогите пожалуйста!!!!!!!!!! 
Нужно сказать следующие предложения в прошедшем времени! 
Образец: He has a car
               He had a car
               He will have a car.

1. They have a big house in the country.
2. My friend has many interesting books.
3. His mother has a nice garden.
4. She has a good dog.
5. These students have five examinations.
6. I have a beautiful picture.