fill in the blanks with the verb to be.
1. both the girl and the boy … training together. 2. neither kate nor her friends … here. 3. the number of teachers in the city … very large. 4. the girls and their parents … at the theatre. 5. all of the students in this group … very good. 6. all of the medicine … here. 7. some of the milk … sour. 8. not only the jewels but also the money … locked up in the safe. 9. neither the gun nor the mask … mine. 10. all of the apples … eaten. 11. half of the equipment … in the next room. 12. any of the cakes … tasty. 13. a number of my friends … planning a holiday together. 14. all of the information … neither important nor interesting.