great

Learn • adjectives • Session size: 10

Practice is designed to help you get familiar with the replacement words. Some sentences may have small grammar errors, and sometimes more than one answer could work—focus on choosing the best replacement word.

Question 1 of 10Score: 0

Boring sentence

Landing on the moon was a great achievement in history, changing what humans believed was possible for the future.

Landing on the moon was a ____ achievement in history, changing what humans believed was possible for the future.