1. There were books and exercise-books on the desk.2. There are some interesting stories in this book/3. There are 7 days in every week.4. There are two semestres in a school year.5. There are no students in the auditorium.6. There were some mistakes in his test.7. There is a lift in the house.8. There will be a garden near the house.9. Is there a school in the village? - No, there isn't.10. There will be many new books in the library.