communal ethnic terraced stilt bamboo floating Heritage Site speciality costumes poultry 1. You can find a lot of traditional ______ houses in this area. 2. Hoi An ancient town was recognized as a World Natural ......... in 1999. 3. If you go to Spa, you can distinguish people from different ethnic groups by their _____________ 4. Famous ................... rice fields can be found in Yen Bai, Ha Giang 5. Some _____ farmers keep ducks and geese in their farms. 6. When we went on a trip to Tay Nguyen, we stayed in a ............. house with a local people. 7. ........................ is a sustainable building material that is actually stronger than wood, bricks or even concrete. 8. There are 54 ......... groups in Viet Nam recognized by the Vietnamese government, and each has their own language, traditions, and subculture. 9. If you visit the north-western region of Viet Nam, you must try five-coloured sticky rice which is well- know as a ........ of this area. 10. One of the most famous .............. markets in Viet Nam is Nga Bay floating market in Hau Giang province.