Here are the correct forms of the words in brackets:

1. Is life in this city **better** than life in your homeland? (good)
2. They will hold a big **celebration** on New Year’s Eve. (celebrate)
3. Evening in the countryside is a very **peaceful** time. (peace)
4. That old building is now a **historic** monument. (history)
5. The children in my neighbourhood are quite **friendly**. (friend)
6. We will have many traditional **activities** on Tet holiday. (activity)
7. The Grand Canyon is not the **widest** canyon in the world. (wide)
8. She often brings a **sleeping** bag instead of a tent. (sleep)