Change the sentence into the reported speech: My father bought this house two years ago. We have done these exercise carefully

1 my father bought this house two years ago
2 we have done these exercise carefully
3 people recycle car tires to mack pipes
4 the workers will build a new school in my town
5 franz gruber wrote the christmast carol in the 19 century
6 people can ruese milk bottles for thirty times
7 people speak english in the world
8 the boy has just broken the classroom window