Chọn đáp án đúng nhất

1.the festival...............annually at the end of august 
A.occurs    B.helds    C.takes place    D.are held
2.burning man is a ..............fesstival held at the end of august
A.music    B.musical    C.musician    D.musicians 
3...........are you going to phu yen? to attend Hoi Mua festival
A.how    B.what    C.when    D.why