The pair of scissors (is / are) dull. 12. There (is / are) 49 students in my class. 13. There (have / has) been a number of telephone calls today. 14. The committee (have / has) already reached a decision. 15. Each student (have / has) answered the first three questions. 16. The crowd at the basketball game (was/ were) wild with excitement. 17. A pack of wild dogs (have / has) frightened the ducks away. 18. The army (have / has) eliminated the enemies. 19. There (have / has) been too many interruptions in this class. 20. Look. An orange and black bird (is / are) sitting in that tree. giup tui voi a dang can gap