1. ___________ number of ethnic minorities had mastered some farming techniques. 2. The Kinh or Viet is ___________ largest group, accounting for 86 percent of ___________ population of Vietnam. 3. The Thai have ___________ population of over one million people, account for approximately 1.8% of ___________ Vietnamese population. 4. Dao women usually wear ___________ long blouse with ___________ dress or trousers. 5. Mua sap is ___________ folk dance of ___________ Muong. 6. The Raglai have __________ musical instrument made of bamboo called __________ chapi. 7. S’tieng is ___________ ethnic group living mostly in ___________ southern provinces of Vietnam. 8. Gathering and hunting still play ___________ important role in ___________ economy of the Laha. 9. Vietnam has 54 ethnic groups and more than 40 of __________ groups living in __________ highlands. 10. When eating is finished, the Dao have ___________ tradition that they never put down the chopsticks on ___________ bowl. mình xin giải thích chi tiết