Exercise Stress 1. a. pollute b. contractual c. reject d. marvellous 2. a. mechanic b. military c. apologize d. miraculous 3. a. compulsory b. intensity c. kidding d. invaluable 4. a. nursery b. focus c. delicate d. secure 5. a. curriculum b. kindergarten c. contaminate d.conventional 6. A. apology B. industrial C. Industry D. Disaster. 7. A. interview B. certificate C.applicant D. primary 8. A. certificate B. apartment C. individual D. biology 9. A. scientific B. availlable C. suspicious D. supportive 10. A. especially B. Comfortably C. carefully D. possibly 11. A. importance B. subtraction C. algebra D. example