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.