0.There is a lot of interesting extra-curriculum `activity` for students in my school.

→ activity(n) hoạt động

1. It is necessary for everyone to take part in the $community$ activities of their village. 

2. When you visit a Thai's house, you will be treated with the best `speciality`.

3. Everybody plays an important role in the `preservation` of the cultural heritage of the group they belong to. 

→ preservation(n) sự bảo tồn

4. The Khmer people are characterized by their unique `artisan` activities.

→ artisan(n) nghệ nhân

5. Although the peoples in Vietnam are diverse, they live $peacefully$  in the same nation.

→ peacefully(adv) một cách hòa bình

$@Ly$