II.Choose A,B,C or D for each blank in the following sentences 1. In the past ,……………. did the Colo people use to cook rice and other foods ? A. how B. why C.which D. what 2. In a Tay’s family ,………… has right to decide the marriage of the children ? A.who B.when C. whom D. how 3. ………….have the Nung preserved their various sources of folk arts and traditional activities for ? A.Why B.How long C.What D. How 4. ………….does the Hug King Temple Festival take place ? 5. A.Where B.Which C.How often D.Both A and C 6. …………….. is the Gong Festival held in special occasions by some ethnic groups in Vietnam? A. Why B.Where C.How often D.When.