VIII. Complete each sentence with an appropriate preposition.
1. Nick is curious ___________ the ethnic minority groups in Vietnam.
2. The Viet account ___________ about 86% of Vietnam’s population.
3. The M’Nong live in houses built ___________ stilts.
4. The Hmong live mostly ___________ the mountainous regions ___________ the north.
5. The M’Nong in Ban Don are well known _______ their elephant hunting and domestication.
6. Many ethnic minority students are studying ___________ boarding schools.
7. The Thai have a population ___________ about one and a half million people.
8. Tay language belongs ___________ the Tay-Thai language group.
9. The communal house is used ___________ village meetings and festivities.
10. The chapi is made ___________ a section of an old bamboo.