5.The living room is ________________ from a large terrace by glass walls. (divisive) 6. We need to ensure a fair ________________ of time and resources. (divisive) 7. What do you ________________ your own computer for? You can use ours. (necessary) 8. There is an urgent ________________ for qualified teachers. (necessary) 9. The company ________________ information about consumer trends. (collection) 10. He's been a coin ________________ for years. (collection) 11. I'm sorry to ________________ you, but there aren't any tickets left. (disappointed) 12. She felt she was a ________________ to her family. (disappointed) 13. To Edward’s ________________, Gina never turned up at the party. (disappointed) 14. She made an attempt to ________________ a mathematical equation. (solution) 15. The island has been seriously ________________ by a copper mine. (pollute) 16. Sulphur dioxide is one of several ________________ that are released into the atmosphere. (pollute) 17. I’d like to ________________ your attention to paragraph four. (direction) 18. Air ________________ can cause breathing problems for some people. (pollute) 19. We must ________________ the risk of infection. (minimum) 20. The lunch special is really good ________________. (valuable)