Write the correct form of the adjective or adverb in parentheses to complete each sentence?

Write the correct form of the adjective or adverb in parentheses to complete each sentence. 1. I'm (Answer) than I've ever been in my life. (happiness) 2. When making any big decision, make sure you think it out and come to the (Answer) conclusion. (smart) 3. Thirteen of the world's top 30 (Answer) cities are in North America. (clean) 4. Census officials have always found it (Answer) to count some groups than others in the population. (hard) 5. Swimming and tubing are not allowed at the falls, but are permitted at points (Answer) downstream. (far) 6. The vulnerable Lesser Antilles iguanas are bright green when young and fade to a (Answer) green - gray as adults. (dark) 7. Walk the rim trail from Inspiration Point to Grandview Point for the (Answer) look at the canyon's natural grandeur. (good) 8. The (Answer) river gorge in North America is Hells Canyon. (deep) 9. Two of the (Answer) rivers in Europe, the Usk and the Towy, are known for trout and salmon fishing. (clean) 10. The (Answer) settlers were aware of Native American ceremonials and dances. (earlier).