Replace the italicized nouns by the personal pronouns in the Nominative or Objective Case. (Замініть виділені іменники особовими займенниками в Називному та Об’єктному відмінках).
1. The girls are playing tennis. 2. I saw the girls in the park. 3. Put the books on the shelf. 4. The books are on the shelf. 5. We have seen the film. 7. The film is very interest­ing. 7. My sister went to the post-office. 8. I am waiting for my sister. 9. We listened to the teacher with great interest. 10. The teacher explains a new grammar rule.​