1. C. bomb
2. B. part
3. A. species
STRESS
4. B. disappear
5. C. agriculture
6. A. introduce
Choose A,B,C or D that best completes each unfinished sentence or substitutes the underlined part.
7. A. established
8. C. ban
9. B. environment
10. C. to protect
11. A. species
12. D. pullutants
13. A. in which
14. B. floods
15. C. to whom
16. A. was given
17. C. was believed
18. B. in danger
19. D. be employed
20. B. to offer
21. D. in
22. D. damaging
23. C. the
