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Lesson 7

1. investigate
2. investigation
3. detect
4. detection
5. violate
6. violation
7. exhibit
8. exhibition
9. operate
10. operation
11. duplicate
12. duplication
13. evaluate
14. evaluation
15. participate
16. participation
17. punctuate
18. punctuation
19. congratulate
20. congratulations
Lesson 8

1. geometry
2. perimeter
3. diameter
4. diagram
5. centimeter
6. kilogram
7. cyclone
8. thermos
9. physician
10. encyclopedia
11. thermometer
12. physics
13. telegram
14. grammatical
15. barometer
16. thermostat
17. physique
18. motorcycle
19. thermal
20. cyclical
Lesson 9

1. architecture
2. achievement
3. fragment
4. sculpture
5. ornament
6. texture
7. failure
8. equipment
9. freedom
10. judgment
11. procedure
12. argument
13. literature
14. boredom
15. legislature
16. fracture
17. gesture
18. tournament
19. kingdom
20. disappointment
Lesson 10

1. plaza
2. fiesta
3. tortilla
4. siesta
5. burro
6. poncho
7. sombrero
8. hammock
9. chocolate
10. tomato
11. enchilada
12. burrito
13. alligator
14. bonanza
15. patio
16. cargo
17. chili
18. cocoa
19. vanilla
20. iguana
Lesson 11

1. desert
2. dessert
3. access
4. excess
5. continual
6. continuous
7. hardy
8. hearty
9. reality
10. realty
11. bizarre
12. bazaar
13. formally
14. formerly
15. hurdle
16. hurtle
17. prescribe
18. proscribe
19. conscious
20. conscience