Form an adjective by adding the suffix ous or al to each word below. If the base word ends in y, change the y to i before adding the suffix. If it ends in f, usually change the f to v before adding the suffix. 1. historic + al, 2. glory + ous, 3. education + al, 4. ornament + al, 5. mischief + ous, 6. tradition + al, 7. colony + al, 8. humor + ous, 9. danger + ous, 10. comic + al, 11. fallacy + ous, 12. nerve + ous.

Answer
1. historical: Add -al to the base word historic. 2. glorious: Change the final y in glory to i and add -ous. 3. educational: Add -al to the base word education. 4. ornamental: Add -al to the base word ornament. 5. mischievous: Change the final f in mischief to v and add -ous. 6. traditional: Add -al to the base word tradition. 7. colonial: Change the final y in colony to i and add -al. 8. humorous: Add -ous to the base word humor. 9. dangerous: Add -ous to the base word danger. 10. comical: Add -al to the base word comic. 11. fallacious: Change the final y in fallacy to i and add -ous. 12. nervous: Drop the final silent e in nerve and add -ous.