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11. My uncle's herd of cows is/are considered the best in the area.
12. The Government has / have fallen and a general election will soon be
held.
13. The team is/are trying on the new trainers.
14. The pack of cards was /were lying all over the drinking table.
15. When the audience has/have kept silent the concert will begin.
16. A team of plumbers was/ were playing against a team of carpenters.
17. This class is/are the best in the school.
18. Many Hollywood stars walks / walk gracefully on the red carpet.
19. His fans scream/screams in excitement.
20. Anne Hathaway and James Franco host /hosts this year's Oscars.