17/ The advantage of living in the countryside is that the air is ___________ . ( pollute)
18/ __________, they were very eager to make a good impression ( nature)
19/ The sneakers were very smart, but they were __________ . ( comfort)
20/ They are planning to protect the forests from ________ . (forest)
21/ Thank you very much for your _________ organization. ( value)
22/ The next stage in the development of television is _________ TV . ( interact)
17. unpolluted
18. Naturally
19. comfortable
20. deforestation
21. valuable
22. interactive
17/ The advantage of living in the countryside is that the air is _unpolluted__________ . ( pollute)
18/ _naturally_________, they were very eager to make a good impression ( nature)
19/ The sneakers were very smart, but they were _uncomfortable_________ . ( comfort)
20/ They are planning to protect the forests from _deforestation_______ . (forest)
21/ Thank you very much for your _valuable________ organization. ( value)
22/ The next stage in the development of television is _interactive________ TV . ( interact)
17. unpolluted
18. Naturally
19. comfortable
20. deforestation
21. valuable
22. interactive