Fill in: is or are 11. Her advice _____ very interesting. 12. Mathematics_____ his favourite subject. 13. Measles_____ a commonillness.

11. Her advice is very interesting.12. Mathematics is his favourite subject.13. Measles is a common illness.14. The glasses are on the table.15. My sister’s hair is long.16. Their bathroom scales are quite accurate.17. Darts is a popular game in Britain.18. This work is too hard.19. People are unhappy with the new tax system.20. The police are near.