Замените существительное с предлогом “of” существительным в форме притяжательного падежа 1. the wife of the teacher 2.

1. The wife of the teacher — the teacher\'s wife. 

2. The ball of the boy — the boy\'s ball.

3. The watch of my friend Peter — my friend\'s watch.

4. The opinion of a student — the student\'s opinion.

5. The library of my father — my father\'s library.

6. The sister of his wife — his wife\'s sister.

7. The question of the teacher — the teacher\'s question.

8. The coat of the boy — the boy\'s coat.

9. The exercise-book of the student — the student\'s exercise-book.