SOUNG AND STRESS
1. A. supply B. dirty C. energ D. happy
2. A. suggest B. disappear C. scientist D. raise
3. A. exactly B. exist C. exhaust D. extinct
4. A. feature B. species C. weather D.decrease
5. A. survive B. prohibit C. fertilizer D. environment
6. A. swallow B. switch C. sweet D. sword
7. A. heat B. nuclear C. feat D. clean
8. A. power B. slow C.snow D.show
9. A. forest B. exist C. busy D. establish
10. A. chemical B. discharge C. change D. choose
11. A. human B. species C. forest D. appear
12. A. pollute B. provide C. transmit D. destroy
13. A. machine B. danger C. nature D. extinct