Here are the suitable question words to fill in the blanks:

1. **What** is the most important holiday in Viet Nam? - I think Tet is.
2. **Where** do the Thai people live? - In the north of Viet Nam.
3. **How tall** is the boy? - 1.7 meter tall.
4. **When** is the Hoa Ban Festival of the Thai people held? - In Lunar February.
5. **How much** money can you earn a month? - 10 million VND.
6. **Who** plays a more important role in a Giarai family? - Women.
7. **Which** ethnic group has a larger population, the Khmer or the Cham? - The Khmer.
8. **How many** ethnic groups are there in Viet Nam? - 54 ethnic groups.
9. **How** do you learn the Muong language? - Because my father is from the Muong.
10. **How far** is it from the centre to the Museum of Ethnology? - It’s about seven kilometres.