Choose the underlined part that needs correcting in each sentence below. Then correct it

Choose the underlined part that needs correcting in each sentence below. Then correct it.
27. Traditional (A) people in this mountainous (B) area live (C) a nomadic (D) life.
28. After the harvesting (A) time, the farmers load (B) the drawn-buffalo (C) cart with (D) hay.
29.Although the (A) weather was (B) bad but (C) the match was not cancelled(D).
30. The(A) Viet have(B) many(C) tradition(D) customs and craft.  
31. How many(A) month is(B) Huong Pagoda Festival held(C) in(D?