1. prevent 11.
property
2. program 12. propose
3. predict 13. precede
4. project 14. proceed
5. pretend 15. pronunciation
6. process 16. professional
7. prefer 17. pretest
8. promise 18. preview
9. previous 19. proclaim
10. protect 20. progress
1. pretty 11. chimney
2. service 12. tunnel
3. thunder 13. effect
4. blanket 14. suspended
5. effort 15. challenge
6. fellow 16. pretzel
7. subject 17. survive
8. perhaps 18. pillow
9. attack 19. hunger
10. entire 20. college
1. wondering 11. submitted
2. fastened 12. whispered
3. permitting 13. transferred
4. controlled 14. occurring
5. listening 15. canceled
6. regretted 16. developing
7. suffered 17. scrubbing
8. admitted 18. upsetting
9. referred 19. wondered
10. bothered 20. quarreled
1. subtract 11. conflict
2. distract 12. exchange
3. contract 13. pumpkin
4. complex 14. sandwich
5. distrust 15. Christmas
6. extra 16. construction
7. improve 17. luncheon
8. instead 18. complaint
9. Congress 19. transform
10. English 20. although
1. slogan 11. closet
2. radar 12. model
3. minutes 13. volcano
4. honest 14. private
5. second 15. balance
6. virus 16. radio
7. shadow 17. basis
8. humor 18. decent
9. salad 19. fanatic
10. eleven 20. novel